The School of Abdera (or the Abderites) was a Pre-Socratic school of thought, founded in Abdera, Thrace around 440 to 430 BC. Its proponents, Leucippus and Democritus, were the earliest atomists. Leucippus is believed to be the founder, and was born at either Abdera or Miletus. Democritus, his student, was native to Abdera. Metrodorus of Chios and Anaxarchus of Abdera were also members, the latter being the teacher of Pyrrho who eventually came to lead the school and later founded Pyrrhonism.