Principal Doctrines I-XX. Epicurus was an ancient Greek philosopher who believed everything was made up of atoms. His PRINCIPAL DOCTRINES are 40 maxims that summarise his ethical theory.

Video for our Chemistry class on the Atomic Model Timeline

Richard Howard reads the conclusion to his poem "The Rape of the Daughters of Leucippus by Castor and Pollux" at the Best American Poetry 2008 Gala Reading in Tischman Auditorium at the New School in New York City, September 26, 2008.