New: Do we have free will?

New: What are the main positions in the free will debate?

Update: Mill on freedom of thought and expression.

Major update to Philosophy and Ethics.

New: Comments page, linked from navigation bar and bottom of each article.

Update: Why I accept the reality of anthropogenic climate change

Update: Were many great scientists creationists?

Updates: Gelfand and Fomin's Calculus of Variations, Section 3 Lemma 2, Section 4.2 Case 2, and Section 4.2 Example 2.