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LETTER XXI. - Vicesimus Knox, The Works of Vicesimus Knox, vol. 5 [1824]

Edition used:

The Works of Vicesimus Knox, D.D. with a Biographical Preface. In Seven Volumes (London: J. Mawman, 1824). Vol. 5.

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LETTER XXI.

My Lord,

A witling, who intended to throw contempt upon logic, made an anagram of the word logica, and called it caligo. As it has been taught for centuries in the scholastic method, to raw boys just entered at the university, it might justly be called, the art of darkening and confusing the mind; but as I have advised you to make use of it, I think it capable of becoming a torch to illuminate your whole progress throughout the land of learning: but you must not dwell on it as an end. Use it, as, what it is, merely an instrument. Use it as you would a pair of spectacles, or a spying-glass, when you cannot see so clearly without it as with it. You have good eyes, and perhaps may not often want a magnifying glass; but it is good to keep one in your pocket.

There is little danger of too great an attention being paid to this study in the present age. The tide of fashion and prejudice runs strongly against it; and it is for this reason I have thought it necessary to urge your attention to it.

It is very true, that God has not made men merely animals, and left it to Aristotle to make them rational. Boys reason, illiterate men and women reason; and though they often reason wrong, yet, for the most part, they are capable of reasoning rightly, if they will but exert their natural abilities, unassisted by art and rule.

It has been said, that a man might as well learn the art of eating, drinking, walking, seeing, smelling, tasting, and the rest, as the art of reasoning; that the power of reasoning comes to a rational creature as naturally as the power of muscular motion: and in exerting muscular motion, who gives himself the trouble to learn the names of the muscles to be moved, and the sinews to be strained? There is great plausibility, and some truth, in all these objections to Logic. There are indeed sound objections, whenever Logic is taught as a principal object; not as a means, but as an end, or as absolutely necessary to the use of natural reason.

I recommend it only as an auxiliary, which, under proper management, may be highly useful. And though I have a sovereign contempt for the Logic of the schools, and the poor pedantry, which made a merely instrumental art the ultimate scope of study, and the business of life, yet I most confidently advise you to comprise it among your preparatory studies. You will not spend that time upon the tools, which is necessary to finish the work.

Of the five books which I mentioned, Wallis, Sanderson, Aldrich, Watts, and Duncan, you ask me the several characters. Wallis is clear, but diffuse and tedious. Sanderson is masterly in definition; and I wish you to read him with great attention. Aldrich's book is a little compendium, which may serve occasionally to refresh your memory, whenever you are desirous of reviving your logical knowledge. Watts's being in English, and rendered easy and popular, you may probably be induced to give it the most attentive perusal. Duncan's was used in some colleges in Oxford: but I know not why it should be preferred to the others.

Dr. Watts was of a most devout and religious disposition, and gave every thing he touched a religious tinge. This, I hope, will be no objection, in your mind, to his very ingenious book. It ought to be a recommendation of it to every good and pious man; though it must, at the same time, be allowed, that the divine has some times obtruded divinity, where it could not be introduced without some degree of violence. But good doctrine is not the less good because not delivered from a pulpit

There are many other treatises on Logic, beside those which I have mentioned, but they are scarcely worth your attention. They attempt to diversify, where diversification is not wanted, and to facilitate, where the difficulty is easily surmountable by common sagacity.

I am, &c.