The Encyclopedia of Classical Philosophy is a reference work on the philosophy of Greek and Roman antiquity. It includes subjects and figures from the dawn of philosophy in Ionia in the 6th century BC to the demise of the Academy in Athens in the 6th century AD. Scholarly study of the texts and philosophical thought of this period has been, during the last half of the 20th century, amazingly productive and has become increasingly sophisticated. The 269 articles in the encyclopedia reflect this development.