Stanford University
Stanford Encyclopedia of Philosophy: Saint Thomas Aquinas
This is a very detailed site about the life and the works of Saint Thomas Aquinas (1225-1274 CE). This site provides the reader with a brief biography, comparisons between Aristotle and Aquinas, commentary on Aquinas' work, and also a...
Other
Centre for Thomist Studies Thomism
Explains origin and nature of Thomism as a system of Catholic thought. Cites the papal proclamation that instituted Thomas Aquinas as a normative thinker for Christian philosophy. A basic, general introduction.
Stanford University
Stanford Encyclopedia of Philosophy: Jacques Maritain
Presents the life and thought of the notable 20th century Thomist, Jacques Maritain. Discusses his epistemology, aesthetics, and social thought, and evaluates his contemporary influence.
New Advent
Catholic Encyclopedia: Whether God Exists?
Excerpt of famous passage in Aquinas's "Summa Theologica" in which he presents his five proofs for God's existence. This influential primary text should be of historical interest to anyone studying philosophy of religion. Please note...