Protagoras, Democritus, and Anaxagoras

Abstract

Recent accounts of the life of Protagoras differ widely from one another in their treatment of the ancient sources, and in the conclusions which they draw from them. A re-examination of the evidence, undertaken in 1949–50 as part of a study of the Prometheus trilogy, has convinced me that a new discussion is urgently needed if we are to place the earlier stages of the sophistic movement in the right context historically; and the purpose of this paper is to lay at least a part of the foundation for such a discussion. Since the evidence for the life of Protagoras includes some allusions to his relations with Democritus, and there are some obvious affinities between the careers of Protagoras and Anaxagoras, I have added a short account of the relevant points in the biography of Democritus and a more detailed study of the evidence for the life of Anaxagoras.