In his Treatise on the Virtues, Aquinas discusses the character and function of habit; the essence, subject, cause, and meaning of virtue; and the separate intellectual, moral, cardinal, and theological virtues. His work constitutes one of the most thorough and incisive accounts of virtue in the history of Christian philosophy. John Oesterle's accurate and elegant translation makes this enduring work readily accessible to the modern reader.
St. Thomas Aquinas (1225-1274) was a Doctor of the church. He was an Italian Dominican friar and Roman Catholic priest who was an influential philosopher, theologian, and jurist in the tradition of scholasticism. Canonized in 1323 by Pope John XXII, Aquinas was the foremost classical proponent of natural theology and the father of Thomism.
Charles J. O'Neil (1909-1988) was professor of philosophy at Loyola University from 1934 to 1947, Marquette University from 1947 to 1961, and at Villanova University from 1961 to 1976. He was a Navy captain during World War II. He is author of several philosophical works and translated the Summa Contra Gentiles of St. Thomas Aquinas into English.
The late John A. Oesterle was assistant chairman of the department of philosophy at the University of Notre Dame (1972-1977) and the editor of The New Scholasticism (1967-1977).
"At the heart of this treatise are the subtle but crucial distinctions St. Thomas draws among the intellect and will, and the intellectual, moral, and theological virtues—establishing at the same time their interdependence. The discussion of prudence, as the bridge between the intellectual and moral virtues, is one of the classic accomplishments of Western thought." —Faith & Reason