Archelaus (philosopher) Archelaus (philosopher) Archelaus (; ; fl. 5th century BCE) was an Ancient Greek philosopher, a pupil of Anaxagoras, and may have been a teacher of Socrates. He asserted that the principle of motion was the separation of hot from cold, from which he endeavoured to explain the formation of the Earth and the creation of animals and humans. Archelaus was a philosopher of the Ionian School, called "Physicus" from having been the first to teach natural philosophy at Athens. This statement of Diogenes Laërtius, is contradicted by Clement of Alexandria, but the two may be reconciled by supposing that Archelaus
Chamaeleon (philosopher) Chamaeleon (philosopher) Chamaeleon (or Chameleon; ; c. 350 – c. 275 BC), was a Peripatetic philosopher of Heraclea Pontica. He was one of the immediate disciples of Aristotle. He wrote works on several of the ancient Greek poets, namely: He also wrote on the Iliad, and on Comedy (περὶ κωμῳδίας). In this last work he treated, among other subjects, of the dances of comedy. This work is quoted by Athenaeus by the title περὶ τῆς ἀρχαίας κωμῳδίας, which is also the title of a work by the Peripatetic philosopher Eumelus. It would seem also that he wrote on Hesiod, for