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
Greek Theatre of Syracuse the room (9.35 x 6.35 m, 4.75 m high) was a tub made of Opus signinum, into which water from the ancient Greek aqueduct flowed. From here the water flowed into the hydraulic system of the theatre. The whole thing might be identified with the "Mouseion" or sanctuary of Muses, seat of the company of actors. According to the anonymous "Life of Euripides", Dionysios dedicated objects belonging to the tragic poet Euripides acquired at great expense in Greece in this sanctuary. Important modifications were made to the theatre, perhaps at the time when the colonia was founded in the early