Front Page Titles (by Subject) Book I: Deals with the ultimate constitution of the universe, which consists of infinite atoms moving in infinite space - On the Nature of Things
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Book I: Deals with the ultimate constitution of the universe, which consists of infinite atoms moving in infinite space - Titus Lucretius Carus, On the Nature of Things 
Lucretius On the Nature of Things, trans. Cyril Bailey (Oxford: Clarendon Press, 1910).
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Deals with the ultimate constitution of the universe, which consists of infinite atoms moving in infinite space
Introduction: Invocation to Venus, the creative power of Nature.Mothern of Aeneas’s sons, joy of men and gods, Venus the life-giver, who beneath the gliding stars of heaven fillest with life the sea that carries the ships and the land that bears the crops; for thanks to thee every tribe of living things is conceived, and comes forth to look upon the light of the sun. Thou, goddess, thou dost turn to flight the winds and the clouds of heaven, thou at thy coming; for thee earth, the quaint artificer, puts forth her sweet-scented flowers; for thee the levels of ocean smile, and the sky, its anger past, gleams with spreading light. For when once the face of the spring day is revealed and the teeming breeze of the west wind is loosed from prison and blows strong, first the birds in high heaven herald thee, goddess, and thine approach, their hearts thrilled with thy might. Then the tame beasts grow wild and bound over the fat pastures, and swim the racing rivers; so surely enchained by thy charm each follows thee in hot desire whither thou goest before to lead him on. Yea, through seas and mountains and tearing rivers and the leafy haunts of birds and verdant plains thou dost strike fond love into the hearts of all, and makest them in hot desire to renew the stock of their races, each after his own kind. And since thou alone art pilot to the nature of things, and nothing without thine aid comes forth into the bright coasts of light, nor waxes glad nor lovely. I long that thou shouldest be my helper in writing these verses, which I essay to trace on the nature of things for the son of the Memmii, my friend, whom thou, goddess, through all his life hast willed to be bright with every grace beyond his fellows. Therefore the more, goddess, grant a lasting loveliness to my words. Bring it to pass that meantime the wild works of warfare may be lulled to sleep over all seas and lands. For thou only canst bless mortal men with quiet peace, since ’tis Mavors, the lord of hosts, who guides the wild works of war, and he upon thy lap oft flings himself back, conquered by the eternal wound of love; and then pillowing his shapely neck upon thee and looking up he feeds with love his greedy eyes, gazing wistfully towards thee, while, as he lies back, his breath hangs upon thy lips. Do thou, goddess, as he leans resting on thy sacred limbs, bend to embrace him and pour forth sweet petition from thy lips, seeking, great lady, gentle peace for the Romans. For neither can we in our country’s time of troublen set to our task with mind undistressed, nor amid such doings can Memmius’s noble sonn fail the fortunes of the state. NA1
Appeal to Memmius.for the rest, do thou (Memmius), lend empty ears and a keen mind, severed from cares, to true philosophy, lest, before they are understood, you should leave aside in disdain my gifts set forth for you with unflagging zeal. For of the most high law of the heaven and the gods I will set out to tell you, and I will reveal the first-beginnings of things, from which nature creates all things, and increases and fosters them, and into which nature too dissolves them again at their perishing: these in rendering our account it is our wont to call matter or the creative bodies of things, and to name them the seeds of things, and again to term them the first-bodies, since from them first all things have their being.
Epicurus and Religion.When the life of man lay foul to see and grovelling upon the earth, crushed by the weight of religion, which showed her face from the realms of heaven, lowering upon mortals with dreadful mien, ’twas a man of Greecen who dared first to raise his mortal eyes to meet her, and first to stand forth to meet her: him neither the stories of the gods nor thunderbolts checked, nor the sky with its revengeful roar, but all the more spurred the eager daring of his mind to yearn to be the first to burst through the close-set bolts upon the doors of nature. And so it was that the lively force of his mind won its way, and he passed on far beyond the fiery walls of the world,n and in mind and spirit traversed the boundless whole; whence in victory he brings us tidings what can come to be and what cannot, yea and in what way each thing has its power limited, and its deepset boundary-stone. And so religion in revenge is cast beneath men’s feet and trampled, and victory raises us to heaven.
The impiety of Religion.Herein I have one fear, lest perchance you think that you are starting on the principles of some unholy reasoning, and setting foot upon the path of sin. Nay, but on the other hand, again and again our foe, religion, has given birth to deeds sinful and unholy.Sacrifice of Iphigenia. Even as at Aulisn the chosen chieftains of the Danai, the first of all the host, foully stained with the blood of Iphianassa the altar of the Virgin of the Cross-Roads.n For as soon as the band braided about her virgin locks streamed from her either cheek in equal lengths, as soon as she saw her sorrowing sire stand at the altar’s side, and near him the attendants hiding their knives, and her countrymen shedding tears at the sight of her, tongue-tied with terror, sinking on her knees she fell to earth. Nor could it avail the luckless maid at such a time that she first had given the name of father to the king. For seized by men’s hands,n all trembling was she led to the altars, not that, when the ancient rite of sacrifice was fulfilled, she might be escorted by the clear cry of ‘Hymen’, but in the very moment of marriage, a pure victim she might foully fall, sorrowing beneath a father’s slaughtering stroke, that a happy and hallowed starting might be granted to the fleet. Such evil deeds could religion prompt.
The fear of death and its cure.You yourself sometime vanquished by the fearsome threats of the seer’s sayings, will seek to desert from us. Nay indeed, how many a dream may they even now conjure up before you, which might avail to overthrow your schemes of life, and confound in fear all your fortunes. And justly so: for if men could see that there is a fixed limit to their sorrows, then with some reason they might have the strength to stand against the scruples of religion, and the threats of seers. As it is there is no means, no power to withstand, since everlasting is the punishment they must fear in death.The nature of the soul. For they know not what is the nature of the soul, whether it is born or else finds its way into them at their birth, and again whether it is torn apart by death and perishes with us, or goes to see the shades of Orcus and his waste pools, or by the gods’ will implants itself in other breasts, as our own Enniusn sang, who first bore down from pleasant Helicon the wreath of deathless leaves, to win bright fame among the tribes of Italian peoples. And yet despite this, Ennius sets forth in the discourse of his immortal verse that there is besides a realm of Acheron, where neither our souls nor bodies endure, but as it were images pale in wondrous wise; and thence he tells that the form of Homer, ever green and fresh, rose to him, and began to shed salt tears, and in converse to reveal the nature of things.Problems to be dealt with. Therefore we must both give good account of the things on high, in what way the courses of sun and moon come to be, and by what force all things are governed on earth, and also before all else we must see by keen reasoning, whence comes the soul and the nature of the mind, and what thing it is that meets us and affrights our minds in waking life, when we are touched with disease, or again when buried in sleep, so that we seem to see and hear hard by us those who have met death, and whose bones are held in the embrace of earth.
Lucretius’ difficulty.Nor does it pass unnoticed of my mind that it is a hard task in Latin verses to set clearly in the light the dark discoveries of the Greeks, above all when many things must be treated in new words, because of the poverty of our tongue and the newness of the themes; yet your merit and the pleasure of your sweet friendship, for which I hope, urge me to bear the burden of any toil, and lead me on to watch through the calm nights, searching by what words, yea and in what measures, I may avail to spread before your mind a bright light, whereby you may see to the heart of hidden things.
A. General principles. The first law: nothing is made of nothing.This terror then, this darkness of the mind, must needs be scattered not by the rays of the sun and the gleaming shafts of day, but by the outer view and the inner law of nature; whose first rule shall take its start for us from this, that nothing is ever begotten of nothingn by divine will. Fear forsooth so constrains all mortal men, because they behold many things come to pass on earth and in the sky, the cause of whose working they can by no means see, and think that a divine power brings them about. Therefore, when we have seen that nothing can be created out of nothing, then more rightly after that shall we discern that for which we search, both whence each thing can be created, and in what way all things come to be without the aid of gods.
Proof: all things require fixed seeds.For if things came to being from nothing, every kind might be born from all things, nought would need a seed. First men might arise from the sea, and from the land the race of scaly creatures, and birds burst forth from the sky; cattle and other herds, and all the tribe of wild beasts, with no fixed law of birth, would haunt tilth and desert. Nor would the same fruits stay constant to the trees, but all would change: all trees might avail to bear all fruits.For 1. they have fixed substance, Why, were there not bodies to bring each thing to birth, how could things have a fixed unchanging mother? But as it is, since all things are produced from fixed seeds, each thing is born and comes forth into the coasts of light, out of that which has in it the substance and first-bodies of each; and ’tis for this cause that all things cannot be begotten of all, because in fixed things there dwells a power set apart.2. and fixed seasons of birth. Or again, why do we see the roses in spring, and the corn in summer’s heat, and the vines bursting out when autumn summons them, if it be not that when, in their own time, the fixed seeds of things have flowed together, then is disclosed each thing that comes to birth, while the season is at hand, and the lively earth in safety brings forth the fragile things into the coasts of light? But if they sprang from nothing, suddenly would they arise at uncertain intervals and in hostile times of year, since indeed there would be no first-beginnings which might be kept apart from creative union at an ill-starred season.3. and require fixed periods for increase, Nay more, there would be no need for lapse of time for the increase of things upon the meeting of the seed, if they could grow from nothing. For little children would grow suddenly to youths, and at once trees would come forth, leaping from the earth. But of this it is well seen that nothing comes to pass, since all things grow slowly, as is natural, from a fixed seed, and as they grow preserve their kind: so that you can know that each thing grows great, and is fostered out of its own substance.4. and fixed nourishment; There is this too, that without fixed rain-showers in the year the earth could not put forth its gladdening produce, nor again held apart from food could the nature of living things renew its kind or preserve its life; so that rather you may think that many bodies are common to many things, as we see letters are to words, than that without first-beginnings anything can come to being.5. they have too a fixed limit of growth; Once more, why could not nature produce men so large that on their feet they might wade through the waters of ocean or rend asunder mighty mountains with their hands, or live to overpass many generations of living men, if it be not because fixed substance has been appointed for the begetting of things, from which it is ordained what can arise? Therefore, we must confess that nothing can be brought to being out of nothing, inasmuch as it needs a seed for things, from which each may be produced and brought forth into the gentle breezes of the air. Lastly, inasmuch as we see that tilled grounds are better than the untilled,6. and culture makes the soil more fertile. and when worked by hands yield better produce, we must know that there are in the earth first-beginnings of things, which we call forth to birth by turning the teeming sods with the ploughshare and drilling the soil of the earth. But if there were none such, you would see all things without toil of ours of their own will come to be far better.
The second law: nothing is resolved into nothing. Otherwise 1. all things would be destroyed at once;Then follows this, that nature breaks up each thing again into its own first-bodies, nor does she destroy ought into nothing.n For if anything were mortal in all its parts, each thing would on a sudden be snatched from our eyes, and pass away. For there would be no need of any force, such as might cause disunion in its parts and unloose its fastenings. But as it is, because all things are put together of everlasting seeds, until some force has met them to batter things asunder with its blow, or to make its way inward through the empty voids and break things up, nature suffers not the destruction of anything to be seen. Moreover, if time utterly destroys whatsoever through age it takes from sight, and devours all its substance,2. nor could the world be replenished; how is it that Venus brings back the race of living things after their kind into the light of life, or when she has, how does earth, the quaint artificer, nurse and increase them, furnishing food for them after their kind? how is it that its native springs and the rivers from without, coming from afar, keep the sea full? how is it that the sky feeds the stars? For infinite time and the days that are gone by must needs have devoured all things that are of mortal body. But if in all that while, in the ages that are gone by, those things have existed, of which this sum of things consists and is replenished, assuredly they are blessed with an immortal nature; all things cannot then be turned to nought.3. the same force could destroy all things alike; And again, the same force and cause would destroy all things alike, unless an eternal substance held them together, part with part interwoven closely or loosely by its fastenings. For in truth a touch would be cause enough of death, seeing that none of these things would be of everlasting body, whose texture any kind of force would be bound to break asunder. But as it is, because the fastenings of the firstelements are variously put together, and their substance is everlasting, things endure with body unharmed, until there meets them a force proved strong enough to overcome the texture of each. No single thing then passes back to nothing, but all by dissolution pass back into the first-bodies of matter.4. as it is, the loss of one thing means the increase of another. Lastly, the rains pass away, when the sky, our father, has cast them headlong into the lap of earth, our mother; but the bright crops spring up, and the branches grow green upon the trees, the trees too grow and are laden with fruit; by them next our race and the race of beasts is nourished, through them we see glad towns alive with children, and leafy woods on every side ring with the young birds’ cry; through them the cattle wearied with fatness lay their limbs to rest over the glad pastures, and the white milky stream trickles from their swollen udders; through them a new brood with tottering legs sports wanton among the soft grass, their baby hearts thrilling with the pure milk. Not utterly then perish all things that are seen, since nature renews one thing from out another, nor suffers anything to be begotten, unless she be requited by another’s death.
The existence of invisible particles is supported by other invisible bodies.Come now, since I have taught you that things cannot be created of nought nor likewise when begotten be called back to nothing, lest by any chance you should begin nevertheless to distrust my words, because the first-beginings of things cannot be descried with the eyes, let me tell you besides of other bodies, which you must needs confess yourself are among things and yet cannot be seen. First of all the might of the awakened wind lashes the ocean and o’erwhelms vast ships and scatters the clouds,1. Wind. and anon scouring the plains with tearing hurricane it strews them with great trees, and harries the mountain-tops with blasts that rend the woods: with such fierce whistling the wind rages and ravens with angry roar. There are therefore, we may be sure, unseen bodies of wind, which sweep sea and land, yea, and the clouds of heaven, and tear and harry them with sudden hurricane; they stream on and spread havoc in no other way than when the soft nature of water is borne on in a flood o’erflowing in a moment, swollen by a great rush of water dashing down from the high mountains after bounteous rains and hurling together broken branches from the woods, and whole trees too; nor can the strong bridges bear up against the sudden force of the advancing flood. In such wise, turbid with much rain, the river rushes with might and main against the piles: roaring aloud it spreads ruin, and rolls1 and dashes beneath its waves huge rocks and all that bars its flood. Thus then the blasts of wind too must needs be borne on; and when like some strong stream they have swooped towards any side, they push things and dash them on with constant assault; sometimes in eddying whirl they seize them up and bear them away in swiftly swirling hurricane. Wherefore again and again there are unseen bodies of wind, inasmuch as in their deeds and ways they are found to rival mighty streams, whose body all may see. Then again we smell the manifold scents of things,2. Scent. and yet we do not ever descry them coming to the nostrils, nor do we behold warm heat,3. Heat. nor can we grasp cold with the eyes,4. Cold. nor is it ours to descry voices;5. Sound. yet all these things must needs consist of bodily nature, inasmuch as they can make impact on our senses. For, if it be not body, nothing can touch and be touched.6. Moisture. Once more, garments hung up upon the shore, where the waves break, grow damp, and again spread in the sun they dry. Yet never has it been seen in what way the moisture of the water has sunk into them, nor again in what way it has fled before the heat. Therefore the moisture is dispersed into tiny particles, which the eyes can in no way see.7. The evidence of Decay. Nay more, as the sun’s year rolls round again and again, the ring on the finger becomes thin beneath by wearing, the fall of dripping water hollows the stone, the bent iron ploughshare secretly grows smaller in the fields, and we see the paved stone streets worn away by the feet of the multitude; again, by the city-gates the brazen statues reveal that their right hands are wearing thin through the touch of those who greet them ever and again as they pass upon their way. All these things then we see grow less, as they are rubbed away: yet what particles leave them at each moment, the envious nature of our sight has shut us out from seeing.8. and Growth. Lastly, whatever time and nature adds little by little to things, impelling them to grow in due proportion, the straining sight of the eye can never behold, nor again wherever things grow old through time and decay. Nor where rocks overhang the sea, devoured by the thin salt spray, could you see what they lose at each moment. ’Tis then by bodies unseen that nature works her will.
The Void.And yet all things are not held close pressed on every side by the nature of body; for there is void in things.n To have learnt this will be of profit to you in dealing with many things; it will save you from wandering in doubt and always questioning about the sum of things, and distrusting my words. There is then a void, mere space untouchable and empty.1. Without void motion is impossible. For if there were not, by no means could things move; for that which is the office of body, to offend and hinder, would at every moment be present to all things; nothing, therefore, could advance, since nothing could give the example of yielding place. But as it is, through seas and lands and the high tracts of heaven, we descry many things by many means moving in diverse ways before our eyes, which, if there were not void, would not so much be robbed and baulked of restless motion, but rather could in no way have been born at all, since matter would on every side be in close-packed stillness.2. Void accounts for the perviousness of seeming solids, Again, however solid things may be thought to be, yet from this you can discern that they are of rare body. In rocky caverns the liquid moisture of water trickles through, and all weeps with copious dripping: food spreads itself this way and that into the body of every living thing: trees grow and thrust forth their fruit in due season, because the food is dispersed into every part of them from the lowest roots through the stems and all the branches. Noises creep through walls and fly through the shut places in the house, stiffening cold works its way to the bones: but were there no empty spaces, along which each of these bodies might pass, you would not see this come to pass by any means.3. and differences in weight in bodies of equal size. Again, why do we see one thing surpass another in weight, when its size is no whit bigger? For if there is as much body in a bale of wool as in lead, it is natural it should weigh as much, since ’tis the office of body to press all things downwards, but on the other hand the nature of void remains without weight. So because it is just as big, yet seems lighter, it tells us, we may be sure, that it has more void; but on the other hand the heavier thing avows that there is more body in it and that it contains far less empty space within. Therefore, we may be sure, that which we are seeking with keen reasoning, does exist mingled in things—that which we call void.
The false theory of motion without void.Herein lest that which some vainly imaginen should avail to lead you astray from the truth, I am constrained to forestall it. They say that the waters give place to the scaly creatures as they press forward and open up a liquid path, because the fishes leave places behind, to which the waters may flow together as they yield: and that even so other things too can move among themselves and change place, albeit the whole is solid. In very truth this is all believed on false reasoning.1. How can things move without room to go to? For whither, I ask, will the scaly creatures be able to move forward, unless the waters have left an empty space? again, whither will the waters be able to give place, when the fishes cannot go forward? either then we must deny motion to every body, or we must say that void is mixed with things, from which each thing can receive the first start of movement. Lastly,2. There is a momentary void between two rebounding bodies. if two broad bodies leap asunder quickly from a meeting, surely it must needs be that air seizes upon all the void, which comes to be between the bodies. Still, however rapid the rush with which it streams together as its currents hasten round, yet in one instant the whole empty space cannot be filled: for it must needs be that it fills each place as it comes, and then at last all the room is taken up.False idea of the condensation of air: But if by chance any one thinksn that when bodies have leapt apart, then this comes to be because the air condenses, he goes astray; for in that case that becomes empty which was not so before, and again that is filled which was empty before, nor can air condense in such a way, nor, if indeed it could, could it, I trow, without void draw into itself and gather into one all its parts.which is impossible without void.
The growth of knowledge.Wherefore, however long you hang back with much objection, you must needs confess at last that there is void in things. And besides by telling you many an instance, I can heap up proof for my words. But these light footprints are enough for a keen mind: by them you may detect the rest for yourself. For as dogs ranging over mountains often find by scent the lairs of wild beasts shrouded under leafage, when once they are set on sure traces of their track, so for yourself you will be able in such themes as this to see one thing after another, to win your way to all the secret places and draw out the truth thence. But if you are slack or shrink a little from my theme, this I can promise you, Memmius, on my own word: so surely will my sweet tongue pour forth to you bounteous draughts from the deep well-springs out of the treasures of my heart, that I fear lest sluggish age creep over our limbs and loosen within us the fastenings of life, before that the whole store of proofs on one single theme be launched in my verses into your ears.
The two natures, matter and void.But now, to weave again at the web, which is the task of my discourse, all nature then, as it is of itself, is built of these two things: for there are bodies and the void, in which they are placed and where they move hither and thither. For that body exists is declared by the feeling which all share alike; and unless faith in this feeling be firmly grounded at once and prevail, there will be naught to which we can make appeal about things hidden, so as to prove aught by the reasoning of the mind. And next, were there not room and empty space, which we call void, nowhere could bodies be placed, nor could they wander at all hither and thither in any direction; and this I have above shown to you but a little while before.There is no third nature. Besides these there is nothing which you could say is parted from all body and sundered from void, which could be discovered, as it were a third nature in the list.1. Touch shows matter, intangibility void. For whatever shall exist, must needs be something in itself; and if it suffer touch, however small and light, it will increase the count of body by a bulk great or maybe small, if it exists at all, and be added to its sum. But if it is not to be touched, inasmuch as it cannot on any side check anything from wandering through it and passing on its way, in truth it will be that which we call empty void.2. Body acts or suffers: void is the field of action. Or again, whatsoever exists by itself, will either do something or suffer itself while other things act upon it, or it will be such that things may exist and go on in it. But nothing can do or suffer without body, nor afford room again, unless it be void and empty space. And so besides void and bodies no third nature by itself can be left in the list of things, which might either at any time fall within the purview of our senses, or be grasped by any one through reasoning of the mind.
Properties and Accidents.For all things that have a name, you will find either properties linked to these two things or you will see them to be their accidents. That is a property which in no case can be sundered or separated without the fatal disunion of the thing, as is weight to rocks, heat to fire, moisture to water, touch to all bodies, intangibility to the void. On the other hand, slavery, poverty, riches, liberty, war, concord, and other things by whose coming and going the nature of things abides untouched, these we are used,Time is not a separate existence, but an accident of things. as is natural, to call accidents. Even so time exists not by itself,n but from actual things comes a feeling, what was brought to a close in time past, then what is present now, and further what is going to be hereafter. And it must be avowed that no man feels time by itself apart from the motion or quiet rest of things. Then again, when men sayn that ‘the rape of Tyndarus’s daughter’,False argument from past events, because the persons, whose accidents they were, are no more. or ‘the vanquishing of the Trojan tribes in war’ are things, beware that they do not perchance constrain us to avow that these things exist in themselves, just because the past ages have carried off beyond recall those races of men, of whom, in truth, these were the accidents. For firstly, we might well say that whatsoever has happened is an accident in one case of the countries, in another even of the regions of space. Or again, if there had been no substance of things nor place and space, in which all things are carried on, never would the flame of love have been fired by the beauty of Tyndaris,But 1. they may be called accidents of places; 2. without matter and space, they could not have occurred; nor swelling deep in the Phrygian heart of Alexander have kindled the burning battles of savage war, nor unknown of the Trojans would the timber horse have set Pergama aflame at dead of night, when the sons of the Greeks issued from its womb. So that you may see clearly that all events from first to last do not exist, and are not by themselves like body, nor can they be spoken of in the same way as the being of the void, but rather so that you might justly call them the accidents of body and place, in which they are carried on, one and all.
The ‘first-bodies’ are atoms: solid, eternal and indivisible particles
B. The ultimate particles are solid and eternal atoms.Bodies, moreover, are in part the first-beginnings of things, in part those which are created by the union of first-beginnings. Now the true first-beginnings of things, no force can quench; for they by their solid body prevail in the end. Albeit it seems hard to believe that there can be found among things anything of solid body. For the thunderbolt of heaven passes through walled houses, as do shouts and cries; iron grows white hot in the flame, and stones seethe in fierce fire and leap asunder; then too the hardness of gold is relaxed and softened by heat, and the ice of brass yields beneath the flame and melts; warmth and piercing cold ooze through silver, since when we have held cups duly in our hands we have felt both alike, when the dewy moisture of water was poured in from above. So true is it that in things there is seen to be nothing solid. But yet because true reasoning and the nature of things constrains us, give heed, until in a few verses we set forth that there are things which exist with solid and everlasting body, which we show to be the seeds of things and their first-beginnings, out of which the whole sum of things now stands created.
Proofs. 1. Void and body are mutually exclusive.First, since we have found existing a twofold nature of things far differing, the nature of body and of space, in which all things take place, it must needs be that each exists alone by itself and unmixed. For wherever space lies empty, which we call the void, body is not there; moreover, wherever body has its station, there is by no means empty void. Therefore the first bodies are solid and free from void. Moreover, since there is void in things created,2. Body must be solid to enclose void. solid matter must needs stand all round, nor can anything by true reasoning be shown to hide void in its body and hold it within, except you grant that what keeps it in is solid. Now it can be nothing but a union of matter, which could keep in the void in things. Matter then, which exists with solid body, can be everlasting,3. Body is that which distinguishes the full from the void; when all else is dissolved. Next, if there were nothing which was empty and void, the whole would be solid; unless on the other hand there were bodies determined, to fill all the places that they held, the whole universe would be but empty void space. Body, then, we may be sure, is marked off from void turn and turn about, since there is neither a world utterly full nor yet quite empty. There are therefore bodies determined, such as can mark off void space from what is full. These cannot be broken up when hit by blows from without,it cannot be broken and is therefore eternal. nor again can they be pierced to the heart and undone, nor by any other way can they be assailed and made to totter; all of which I have above shown to you but a little while before. For it is clear that nothing could be crushed in without void, or broken or cleft in twain by cutting, nor admit moisture nor likewise spreading cold or piercing flame, whereby all things are brought to their end. And the more each thing keeps void within it, the more is it assailed to the heart by these things and begins to totter. Therefore, if the first bodies are solid and free from void, as I have shown, they must be everlasting. Moreover,4. Otherwise all things would ere now have perished. if matter had not been everlasting, ere this all things had wholly passed away to nothing, and all that we see had been born again from nothing. But since I have shown above that nothing can be created from nothing, nor can what has been begotten be summoned back to nothing, the first-beginnings must needs be of immortal body, into which at their last day all things can be dissolved, that there may be matter enough for renewing things. Therefore the first-beginnings are of solid singleness, nor in any other way can they be preserved through the ages from infinite time now gone and renew things.
5. If there were no limit to division, things could not reach maturity in due season, and destruction would now have gone past repair.Again, if nature had ordainedn no limit to the breaking of things, by now the bodies of matter would have been so far brought low by the breaking of ages past, that nothing could be conceived out of them within a fixed time, and pass on to the full measure of its life; for we see that anything you will is more easily broken up than put together again. Wherefore what the long limitless age of days, the age of all time that is gone by, had broken ere now, disordering and dissolving, could never be renewed in all time that remains. But as it is, a set limit to breaking has, we may be sure, been appointed, since we see each thing put together again, and at the same time fixed seasons ordained for all things after their kind, in the which they may be able to reach the flower of their life.6. Solid bodies with void can make soft things: the reverse is impossible. There is this too that, though the first-bodies of matter are quite solid, yet we can give account of all the soft things that come to be, air, water, earth, fires, by what means they come to being, and by what force each goes on its way, when once void has been mingled in things. But on the other hand, if the first-beginnings of things were to be soft, it will not be possible to give account whence hard flints and iron can be created; for from the first all nature will lack a first-beginning of foundation. There are then bodies that prevail in their solid singleness, by whose more close-packed union all things can be riveted and reveal their stalwart strength. Moreover,7. If there are not atoms, things themselves must be eternal, which is clearly untrue. if no limit has been appointed to the breaking of things, still it must needs be that all the bodies of things survive even now from time everlasting, such that they cannot yet have been assailed by any danger. But since they exist endowed with a frail nature, it is not in harmony with this that they have been able to abide for everlasting time harried through all the ages by countless blows.
8. Eternal atoms account for the persistence of species.Once again, since there has been appointed for all things after their kind a limit of growing and of maintaining life, and inasmuch as it stands ordained what all things severally can do by the laws of nature, and what too they cannot, nor is anything so changed, but that all things stand so fast that the diverse birds all in their due order show that the marks of their kind are on their body, they must also, we may be sure, have a body of unchanging substance. For if the first-beginnings of things could be vanquished in any way and changed, then, too, would it be doubtful what might come to being, what might not, yea, in what way each thing has its power limited and its deepset boundary-stone, nor could the tribes each after their kind so often recall the nature, habits, manner of life and movements of the parents.
9. The analogy of perceptible extremities proves the solid singleness of the atoms.Then, further, since there are extreme pointsn , one after another <on bodies, which are the least things we can see, likewise, too, there must be a least point>1 on that body, which our senses can no longer descry; that point, we may be sure, exists without parts and is endowed with the least nature, nor was it ever sundered apart by itself nor can it so be hereafter, since it is itself but a part of another and that the first single part: then other like parts and again others in order in close array make up the nature of the first body, and since they cannot exist by themselves, it must needs be that they stay fast there whence they cannot by any means be torn away. The first-beginnings then are of solid singleness; for they are a close dense mass of least parts, never put together out of a union of those parts, but rather prevailing in everlasting singleness; from them nature, keeping safe the seeds of things, suffers not anything to be torn away, nor ever to be removed.10. Unless there is a ‘least part’ the universe and the smallest thing are equal. Moreover, if there be not a least thing, all the tiniest bodies will be composed of infinite parts, since indeed the half of a half will always have a half, nor will anything set a limit. What difference then will there be between the sum of things and the least of things? There will be no difference; for however completely the whole sum be infinite, yet things that are tiniest will be composed of infinite parts just the same. And since true reasoning cries out against this, and denies that the mind can believe it, you must be vanquished and confess that there are those things which consist of no parts at all and are of the least nature. And since these exist, those first-beginnings too you must needs own are solid and everlasting.11. The least parts, if separated, could not produce things. And again, if nature, the creatress, had been used to constrain all things to be dissolved into their least parts, then she could not again renew aught of them, for the reason that things which are not enlarged by any parts, have not those powers which must belong to creative matter, the diverse fastenings, weights, blows, meetings, movements, by which all things are carried on.
Refutation of rival theories
C. False theories. That one element is the primal substance. Heraclitus’s doctrine of fire.Wherefore those who have thought that fire is the substance of things, and that the whole sum is composed of fire alone, are seen to fall very far from true reasoning. Heraclitusn is their leader who first enters the fray, of bright fame for his dark sayings, yet rather among the empty-headed than among the Greeks of weight, who seek after the truth. For fools laud and love all things more which they can descry hidden beneath twisted sayings, and they set up for true what can tickle the ear with a pretty sound and is tricked out with a smart ring.
1. It does not account for the variety of things.For I am eager to know how things could be so diverse, if they are created of fire alone and unmixed. For it would be of no avail that hot fire should condense or grow rare, if the parts of fire had the same nature which the whole sum of fire has as well. For fiercer would be the flame, if the parts were drawn together, and weaker again, were they sundered and scattered. But further than this there is nothing which you can think might come to pass from such a cause, far less might the great diversity of things come from fires condensed and rare. This too there is:2. He denies the void and so vitiates his own theory. if they were to hold that void is mingled in things, the fires will be able to condense or be left rare. But because they see many things to thwart them, they hold their peace and shrink from allowing void unmixed among things;1 while they fear the heights, they lose the true track, nor again do they perceive that, if void be removed from things, all things must condense and be made one body out of many, such as could not send out anything from it in hot haste; even as fire that brings warmth casts abroad light and heat, so that you may see that it has not parts close-packed.3. Fire ever changing to other things means ultimate destruction. But if perchance they believe that in some other way fires may be quenched in union and alter their substance, in very truth if they do not spare to do this at any point, then, we may be sure, all heat will perish utterly to nothing, and all things created will come to be out of nothing. For whenever a thing changes and passes out of its own limits, straightway this is the death of that which was before. Indeed something must needs be left untouched to those fires, lest you find all things returning utterly to nothing, and the store of things born again and growing strong out of nothing.The true atomic view. As it is then, since there are certain bodies most determined which keep nature safe ever the same, through whose coming and going and shifting order things change their nature and bodies are altered, you can be sure that these first-bodies of things are not of fire. For it would be no matter that some should give place and pass away, and others be added, and some changed in order, if despite this all retained the nature of heat; for whatever they might create would be in every way fire. But, I trow, the truth is this; there are certain bodies, whose meetings, movements, order, position, and shapes make fires, and when their order changes, they change their nature, and they are not made like to fire nor to any other thing either, which is able to send off bodies to our senses and touch by collision our sense of touch.
4. Heraclitus impugns the senses.Moreover, to say that fire is all things, and that there is no other real thing in the whole count of things, but only fire, as this same Heraclitus does, seems to be raving frenzy. For on behalf of the senses he fights himself against the senses, and undermines those on which all that he believes must hang, whereby he himself has come to know that which he names fire. For he believes that the senses can know fire aright, but not all other things, which are no whit less bright to see. And this seems to me alike idle and frenzied. For to what shall we appeal? What can be surer for us than the senses themselves, whereby we may mark off things true and false?5. Why choose fire? Besides, why should any one rather annul all things, and wish to leave only the nature of heat, than deny that fire exists, and grant in its stead that another nature exists? For it seems equal madness to say the one or the other.
That (a) other elements are the primal substance,Wherefore those who have thought that fire is the substance of things, and that the whole sum may be built of fire, and those who have set up air as the first-beginning for the begetting of things, or again all who have thought that moisture fashions things alone by itself, or that earth creates all and passes into all the natures of things, seem to have strayed very far away from the truth.or(b)a combination of two, or (c) of four. Add to them too those who make the first-beginnings of things twofold, linking air to fire or earth to water, and those who think that all can grow up out of four things, fire, earth, wind, and rain. Of them in the forefront comes Empedoclesn of Acragas; him that islandn bore within the three-cornered coasts of its lands, around which flows the Ionian ocean, with many a winding inlet,Empedocles. splashing salt foam from its green waves, while with narrow strait a tearing sea sunders with its waves the coasts of Italy’s lands from the island-borders. Here is devastating Charybdis, and here the rumblings of Aetna threaten to gather once more the flames of its wrath, that again in its might it may belch forth the fires bursting from its throat, and once more dash to the sky its flashing flames. And though this mighty country seems in many ways marvellous to the tribes of men, and is said to deserve seeing, rich in goodly things, and strengthened with a mighty wealth of men, yet it is seen to have held nothing in it more glorious than this man, nothing more holy, more marvellous and loved. Nay, the songs of his godlike heart lift up their voice and set forth his glorious discoveries, so that he seems scarce born of human stock.n
Errors of Empedocles and his school:Yet he and those whom I named before, weaker than he by exceeding many degrees, and far beneath him, though they discovered much in good, nay godlike fashion, and gave answers as from the shrine of their hearts in more holy wise and with reasoning far more sure than the Pythian priestess who speaks out from the tripod and laurel of Phoebus, yet in the first-beginnings of things they came to grief: great were they, and great and heavy their fall therein.1. they deny the void: First because they take away the void from things, but suppose movement, and leave things soft and rare, air, sunlight, fire, earth, beasts, and crops, and yet mingle no void in their body.2. they set no limit to division; Then because they hold that there is no limit at all to the cutting of bodies, that no halting-place is set to their breaking, nor again is there any least among things. And that when we see that there is that extreme point in each thing, which is seen to be the least to our senses, so that you can infer from this that the extreme point in things which you cannot see is the least in them. Then follows this that,3. their elements are soft since they suppose the first-beginnings of things soft, things which we see come to birth and endowed throughout with a mortal body, the whole sum of things must then return to naught, and the store of things be born again, and grow strong out of nothing. And how far both this and that are from the truth, you will know by now.4. and pernicious to one another. Then again, these things are in many ways hostile, nay poison, the one to the other; therefore either when they meet they will pass away, or they will so fly apart, as when a storm gathers we see the thunderbolts and rain and wind fly asunder.
5. Why not call things the primal substance of the elements?Again, if from four things all are created and all again are dissolved into those things, how can they be called the first-beginnings of things any more than things the first-beginnings of them, with our thought reversed? For they are begotten turn by turn, and change their colour and all their nature one with the other from all time onward. But if perchance you think that the body of fire and the body of earth and the breezes of the air and the dewy moisture so unite,6. or, if the elements do not change in compounds, what else could they create? that in union no one of them changes its nature, you will see that nothing can be created out of them, no, not a living thing, nor one with lifeless body, like a tree. Indeed in the mingling of this diverse mass each thing will reveal its own nature, and air will be seen to be mixed together with earth, and heat to cleave to moisture. But first-beginnings ought in the begetting of things to bring to bear a secret and unseen nature, that nothing may stand out which might bar and thwart whatever is created from existing with its own true being.
7. The flux of the elements destroys permanence;But indeed they trace it back to heaven and heaven’s fires, and hold that fire first turns itself into the breezes of the sky, that thence is begotten rain, and of rain is created earth, and then all things pass back again from earth, first moisture, next air, then heat, and that these things never cease their mutual changes, in their path from heaven to earth, from earth to the stars of the firmament. But the first-beginnings ought in no wise to do this. For it must needs be that something abides unchangeable, that all things be not altogether brought to naught. For whenever a thing changes and passes out of its own limits, straightway this is the death of that which was before. Wherefore since the things we have named a little before pass into a state of interchange, they must needs be made of other things, which cannot in any case be altered, lest you find all things returning altogether to naught. Why not rather suppose that there are certain bodies endowed with such a nature, and that, if by chance they have created fire, they can too, when a few are removed and a few added, and their order and movement is changed, make the breezes of the sky, and that thus all things are changed one into another?
8. the argument from the presence of the four elements in growth;‘But,’ you say, ‘the facts show clearly that all things are nourished and grow from the earth up into the breezes of the sky; and unless the season at a propitious time fosters them with rain, so that the trees rock beneath the outpouring of the storm-clouds, and the sun for its part cherishes them, and bestows its heat on them, crops, trees, living creatures, none could grow.’ Yes, in very truth, unless we too were nurtured by dry food and soft moisture, we should lose our flesh, and all the life too would be loosened from all our sinews and bones.its true atomic explanation. For beyond all doubt we are nurtured and nourished upon things determined, and other things again, each in their turn, on things determined. Yea, we may be sure, it is because many first-beginnings common in many ways to many things are mingled among things, that so diverse things are nourished on diverse food. And often it is of great matter with what others those first-beginnings are bound up, and in what position, and what movements they mutually give and receive; for the same build up sky, sea, earth, rivers, sun, the same too crops, trees, living creatures, but only when mingled with different things and moving in different ways. Indeed scattered abroad in my verses you see many letters common to many words, and yet you must needs grant that verses and words are unlike both in sense and in the ring of their sound. So great is the power of letters by a mere change of order. But the first-beginnings of things can bring more means to bear, by which all diverse things may be created.
The homoeomeria of Anaxagoras:Now let us also search into the homoeomeria of Anaxagoras,n as the Greeks term it, though the poverty of our country’s speech does not suffer us to name it in our own tongue; nevertheless the thing itself it is easy to set forth in words. First—what he calls the homoeomeria of things—you must know that he thinks that bones are made of very small and tiny bones, and flesh of small and tiny pieces of flesh, and blood is created of many drops of blood coming together in union, and that gold again can be built up of grains of gold, and the earth grow together out of little earths, that fire is made of fires, and water of water-drops, and all the rest he pictures and imagines in the same way.1. he denies the void; And yet he does not allow that there is void in things on any side, nor that there is a limit to the cutting up of bodies. Therefore in this point and that he seems to me to go astray just as they did,2. he sets no limit to division; of whom I told above. Add too to this that he pictures his first-beginnings too weak: if indeed those are first-beginnings, which exist endowed with a nature like things themselves, which suffer none the less, and pass away, nor does anything rein them back from their destruction.3. his first particles are soft; For which of them all will hold out beneath strong pressure, so as to escape death in the very jaws of destruction? fire or moisture or breeze? which of these? blood or bones? Not one, I trow, when everything alike will be altogether as mortal as the things we see clearly before our eyes vanquished by some violence and passing away. But that things cannot fall away into nothing, nor again grow from nothing, I call to witness what I have before now proved.4. he does not account for change. Moreover, since ’tis food that increases and nourishes the body, you may know that our veins and blood and bones <and sinews are created of parts alien in kind>;1 or if they say that all foods are of mingled substance, and have in them little bodies of sinews, and bones and indeed veins and portions of gore, then it will be that all food, both dry, yes and liquid too, must be thought to consist of things alien in kind, of bones and sinews and matter and blood mingled together. Moreover, if all bodies that grow from out the earth are in the earth, the earth must be composed of things alien in kind, which rise up out of the earth. Shift this to another field, you may use the same words again. If in logs flame lurks hidden, and smoke and ash, it must needs be that the logs are composed of things alien in kind. Moreover, all the bodies which the earth nourishes, it increases <from things alien in kind, which rise up out of the earth. So too the bodies which logs emit, are nourished>1 upon things alien in kind, which rise up out of the logs.
Anaxagoras’s evasion: ‘all things are in all things’;Herein there is left a slight chance of hiding from justice, which Anaxagoras grasps for himself, to hold that all things are mingled, though in hiding, in all things, but that that one thing comes out clear, whereof there are most parts mingled in, stationed more ready to view and in the forefront. But this is very far banished from true reasoning. For it were right then that corn also,then they ought to appear. when crushed by the threatening strength of rock, should often give out some sign of blood, or one of those things which are nourished in our body, and that when we rub it with stone on stone, gore should ooze forth. In the same way it were fitting that blades of grass too and pools of water should often give out sweet drops with a savour like the richness of the milk of fleecy beasts, and that often when sods of earth are crumbled, kinds of grasses and corn and leaves should be seen, hiding in tiny form, scattered about among the earth, lastly that ash and smoke should be seen in logs, when they were broken off, and tiny flames in hiding. But since facts clearly show that none of these things comes to pass, you may be sure that things are not so mingled in other things, but that seeds common to many things lie mingled and hidden in things in many ways.
The argument from forest conflagrations.‘But often on mighty mountains it comes to pass,’ you say, ‘that the neighbouring tops of tall trees rub together, when the strong south winds constrain them to it, until at last a flowery flame gathers, and they blaze with fire.’ And yet you must know that fire is not implanted in their wood, but there are many seeds of heat, which when they have flowed together through the rubbing, create fires in the forests. But if the flame had been hidden away ready-made in the forests, the fires could not have been concealed for any time, they would consume the forests one and all, and burn the trees to ashes.The true atomic explanation. Do you not then see now, what I said but a little while ago, that it is of very great matter often with what others those same first-beginnings are bound up, and in what position, and what movements they mutually give and receive, and that the same a little changed with one another can create bearns or flames? Even as the words themselves have their letters but little changed, when with sound distinct we signify beams or flames.Reductio ad absurdum. Once again, if you think that all that you can descry in things clear to be seen cannot come to being, but that you must suppose first-bodies of matter endowed with a nature like the whole, by this reasoning you see the first-beginnings of things pass away. Nay, it will come to be that they will be shaken with quivering mirth and laugh aloud, and wet face and cheeks with salt tears.
The Universe is Infinite
D. Lucrotius’s mission. Come now, learn what remains, and listen to clearer words. Nor do I fail to see in mind how dark are the ways; but a great hope has smitten my heart with the sharp spur of fame, and at once has struck into my breast the sweet love of the muses, whereby now inspired with strong mind I traverse the distant haunts of the Pierides, never trodden before by the foot of man. ’Tis my joy to approach those untasted springs and drink my fill, ’tis my joy to pluck new flowers and gather a glorious coronal for my head from sports whence before the muses have never wreathed the forehead of any man. First because I teach about great things, and hasten to free the mind from the close bondage of religion, then because on a dark theme I trace verses so full of light, touching all with the muses’ charm. For that too is seen to be not without good reason; but even as healers, when they essay to give loathsome wormwood to children, first touch the rim all round the cup with the sweet golden moisture of honey, so that the unwitting age of children may be beguiled as far as the lips, and meanwhile may drink the bitter draught of wormowood, and though charmed may not be harmed, but rather by such means may be restored and come to health; so now, since this philosophy full often seems too bitter to those who have not tasted it, and the multitude shrinks back away from it, I have desired to set forth to you my reasoning in the sweettongued song of the muses, and as though to touch it with the pleasant honey of poetry, if perchance I might avail by such means to keep your mind set upon my verses, while you come to see the whole nature of things, what is its shape and figure.
The problem of infinity. But since I have taught that the most solid bodies of matter fly about for ever unvanquished through the ages, come now, let us unfold, whether there be a certain limit to their full sum or not; and likewise the void that we have discovered, or room or space, in which all things are carried on,There is no limit to the sum of things. let us see clearly whether it is all altogether bounded or spreads out limitless and immeasurably deep.
a. The universe is infinite: 1. for it has no bounding point; The whole universe then is bounded in no direction of its ways; for then it would be bound to have an extreme point. Now it is seen that nothing can have an extreme point, unless there be something beyond to bound it, so that there is seen to be a spot further than which the nature of our sense cannot follow it. As it is, since we must admit that there is nothing outside the whole sum, it has not an extreme point, it lacks therefore bound and limit. Nor does it matter in which quarter of it you take your stand; so true is it that, whatever place every man takes up, he leaves the whole boundless just as much on every side.2. experiment of the hurled dart; Moreover, suppose nown that all space were created finite, if one were to run on to the end, to its furthest coasts, and throw a flying dart, would you have it that that dart, hurled with might and main, goes on whither it is sped and flies afar, or do you think that something can check and bar its way? For one or the other you must needs admit and choose. Yet both shut off your escape and constrain you to grant that the universe spreads out free from limit. For whether there is something to check it and bring it about that it arrives not whither it was sped, nor plants itself in the goal, or whether it fares forward, it set not forth from the end. In this way I will press on, and wherever you shall set the furthest coasts, I shall ask what then becomes of the dart. It will come to pass that nowhere can a bound be set and room for flight ever prolongs the chance of flight.3. the sensible world bears no analogy. Lastly, before our eyes one thing is seen to bound another; air is as a wall between the hills, and mountains between tracts of air, land bounds the sea, and again sea bounds all lands; yet the universe in truth there is nothing to limit outside.
b. Space is infinite: otherwise matter would collect at the bottom. Moreover, if all the space in the whole universe were shut in on all sides, and were created with borders determined, and had been bounded, then the store of matter would have flowed together with solid weight from all sides to the bottom, nor could anything be carried on beneath the canopy of the sky, nor would there be sky at all, nor the light of the sun, since in truth all matter would lie idle piled together by sinking down from limitless time. But as it is, no rest, we may be sure, has been granted to the bodies of the first-beginnings, because there is no bottom at all, whither they may, as it were, flow together, and make their resting-place. All things are for ever carried on in ceaseless movement from all sides, and bodies of matter are even stirred up and supplied from beneath out of limitless space. The nature of room then and the space of the deep is such that neither could the bright thunderbolts course through it in their career, gliding on through the everlasting tract of time, nor bring it about that there remain a whit less to traverse as they travel; so far on every side spreads out huge room for things, free from limit in all directions everywhere.
c. Matter is infinite: Nay more, nature ordains that the sum of things may not have power to set a limit to itself, since she constrains body to be bounded by void, and all that is void to be bounded by body, so that thus she makes the universe infinite by their interchange, or else at least one of the two, if the other of them bound it not, yet spreads out immeasurable with nature unmixed. <But space I have taught above spreads out without limit.otherwise things could not last If then the sum of matter were bounded,>1 neither sea nor earth nor the gleaming quarters of heaven nor the race of mortal men, nor the hallowed bodies of the gods could exist for the short space of an hour.or even have been created. For driven apart from its unions the store of matter would be carried all dissolved through the great void, or rather in truth it could never have grown together and given birth to anything, since scattered abroad it could not have been brought to meet For in very truth,Our world was not formed by design but by the chance movements of atoms. not by design did the first-beginnings of things place themselves each in their order with foreseeing mind, nor indeed did they make compact what movements each should start, but because many of them shifting in many ways throughout the world are harried and buffeted by blows from limitless time, by trying movements and unions of every kind, at last they fall into such dispositions as those, whereby our world of things is created and holds together. And it too, preserved from harm through many a mighty cycle of years, when once it has been cast into the movements suited to its being, brings it about that the rivers replenish the greedy sea with the bounteous waters of their streams, and the earth, fostered by the sun’s heat, renews its increase, and the race of living things flourishes, sent up from her womb, and the gliding fires of heaven are alive; all this they would in no wise do, unless store of matter might rise up from limitless space, out of which they are used to renew all their losses in due season. For even as the nature of living things, robbed of food, loses its flesh and pines away, so all things must needs be dissolved, when once matter has ceased to come for their supply, turned aside in any way from its due course.Its preservation by blows from without. Nor can blows from without on all sides keep together the whole of each world which has come together in union. For they can smite on it once and again, and keep a part in place, until others come, and the sum may be supplied. Yet sometimes they are constrained to rebound and at once afford space and time for flight to the first-beginnings of things, so that they can pass away freed from union.Necessity of infinity of matter. Therefore, again and again, it must be that many things rise up, yea, and in order that even the blows too may not fail, there must needs be limitless mass of matter on all sides.
False theory of Stoics: the world is held together by centripetal force.Herein shrink far from believing,n Memmius, what some say: that all things press towards the centre of a sum, and that ’tis for this cause that the nature of the world stands fast without any blows from outside, and that top and bottom cannot part asunder in any direction, because all things are pressing upon the centre (if indeed you can believe that anything can stand upon itself): and that all heavy things which are beneath the earth press upwards, and rest placed upside down upon the earth,Its absurdities. like the images of things which we see, as it is, through water. And in the same way they maintain that living things walk head downwards, and cannot fall off the earth into the spaces of heaven beneath them any more than our bodies can of their free will fly up into the quarters of heaven: that when they see the sun, we are descrying the stars of night, and that they share with us turn by turn the seasons of the sky, and pass nights equal to our days.1 But empty error has commended these false ideas to fools, because they embrace and hold a theory with twisted reasoning. For there can be no centre, since the universe is created infinite. Nor, if indeed there were a centre, could anything at all rest there any more for that, rather than be driven away for some far different reason: for all room and space, which we call void, must through centre or not-centre give place alike to heavy bodies, wherever their motions tend. Nor is there any place, to which when bodies have come, they can lose the force of their weight and stand still in the void; nor must aught that is void support anything, but rather hasten to give place, as its own nature desires. It cannot be then that things can be held together in union in such a way, constrained by a yearning for the centre.
Its inconsistency; for not all things seek the centre.Moreover, since they do not pretend that all bodies press towards the centre, but only those of earth and liquid, the moisture of the sea and mighty waters from the mountains, and those things which are, as it were, enclosed in an earthy frame; but on the other hand, they teach that the thin breezes of air and hot fires at the same time are carried away from the centre, and that for this cause all the sky around is twinkling with stars, and the flame of the sun is fed through the blue tracts of heaven, because all the heat fleeing from the centre gathers itself together there; nor again can the topmost branches grow leafy upon trees, unless from the earth little by little each has food <supplied by nature, their thoughts are not at harmony with themselves.Without infinite matter, the world would be destroyed. There must then be an infinite store of matter>,1 lest after the winged way of flames the walls of the world suddenly fly apart, dissolved through the great void, and lest all else follow them in like manner, or the thundering quarters of the sky fall down from above, and the earth in hot haste withdraw itself from beneath our feet, and amid all the mingled ruin of things on earth and of the sky, whereby the frames of bodies are loosed, it pass away through the deep void, so that in an instant of time not a wrack be left behind, except emptied space and unseen first-beginnings. For on whatever side you maintain that the bodies fail first, this side will be the gate of death for things, by this path will all the throng of matter cast itself abroad.
Progress in learning.These things you will learn thus, led on with little trouble; for one thing after another shall grow clear, nor will blind night snatch away your path from you, but that you shall see all the utmost truths of nature: so shall things kindle a light for others.
[1 ] Some lines are lost here, in which he passed from addressing Venus to Memmius.
[1 ] Read ruitque et quidquid.
[1 ] Two lines are probably lost here, the sense of which has been admirably restored by Munro:corporibus, quod iam nobis minimum esse videtur,debet item ratione pari minimum esse cacumen
[1 ] Read mussant and place semicolon after purum, 1. 658.
[1 ] Two lines seem to be lost here, of which Munro has supplied the sense:ex alienigenis, quae terris exoriuntur.sic itidem quae ligna emittunt corpora, aluntur
[1 ] Munro again has well supplied the sense of two lost lines:sed spatium supra docui sine fine patere.si finita igitur summa esset materiai,
[1 ] The next eight lines are omitted or mutilated in the MSS., but once more Munro’s restoration must give the sense, and probably something very near the actual words.
[1 ] The best MS. marks eight lines lost here, corresponding to the mutilation above: the words in brackets would give the general sense, as suggested by Munro.