In this final edition of his classic study of St. Thomas Aquinas, Etienne Gilson presents the sweeping range and organic unity of Thomistic philosophical thought. Gilson demonstrates that Aquinas drew from a wide spectrum of sources in the development of his thought—from Aristotle, to the Arabic and Jewish philosophers of his time, as well as from Christian writers. What results is an insightful introduction to the thought of Aquinas and the Scholastic philosophy of the Middles Ages.

ETIENNE GILSON was born in Paris in 1884. He became Professor of Medieval Philosophy at the Sorbonne in 1921, and from 1932 until his retirement in 1951 he held a similar chair at the College de France. From 1929 until his death in 1978 he was associated with the Pontifical Institute of Medieval Studies at the University of Toronto.