Aquinas Ethicus: or, the Moral Teaching of St. Thomas. A Translation of the Principal Portions of the Second part of the Summa Theologica, with Notes by Joseph Rickaby, S.J. (London: Burns and Oates, 1892). http://oll.libertyfund.org/titles/1966,
A translation of the principal portions of the second part of the Summa Theologica.
The text is in the public domain.