Other
University of St. Thomas: Virtual Medieval Church: Summa Theologiae
Brief description of Thomas Aquinas' Summa Theologiae. Lists the three parts of the work and provides a link to a pop-up excerpt from the Existence of God with optional narration.
Kansas State
Kansas State University: Medieval Christian Scholasticism
This site presents the aims and methods of Medieval Christian Scholasticism, describing how the philosophy was influenced by Thomas Aquinas and then presenting a brief history of the term.
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...