Aquinas on Law
Selections from the Summa Theologiae pertaining to law, translated by David Burr. "Responsio" sections only, some articles omitted entirely. From I-II, 90, 1, to I-II, 97, 2.
Of God and His Creatures
An annotated, abridged version of St. Thomas Aquinas's work "Summa Contra Gentiles". At Notre Dame.
On the Eternity of the World
Robert T. Miller translation. "We thus ought to determine whether there is any contradiction between these two ideas, namely, to be made by God and to have always existed." At the Internet Medieval Sourcebook.
On the Mixture of the Elements, to Master Philip o
Paul Vincent Spade translation. In pdf. 111K.
On the Principles of Nature
Gerry Campbell translation.
Summa Theologica
Online HTML version of the text, translated by the Fathers of the English Dominican Province. At New Advent.
Summa Theologica
Complete text of the 1947 Benziger Brothers edition, with concordances and word frequency lists. Each question in its own file.