Conversation Between D'Alembert and Diderot: Diderot's dialogue of 1769, promoting a materialist explanation of consciousness.
D'Alembert's Dream: An online English translation of this didactic Diderot drama from 1769.
Positive Atheism's Big List of Denis Diderot Quotations: Numerous excerpts from his writings.
Rameau's Nephew: Online English translation by Ian Johnston of this 1762 work by Diderot. Includes links to the French text.