Stanford University
Stanford Encyl. Of Philosophy: Aristotle's Psychology
Detailed, sophisticated analysis from the Stanford Encyclopedia of Philosophy of Aristotelian psychology. Discusses primarily his theories of "hylomorphism", mind, and perception. Also explains Aristotle's famous "four causes."
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...