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 Madonna (sculpture) Greek Madonna (sculpture) The Greek Madonnais a Byzantine bas-relief sculpture of the Virgin Mary in Ravenna - she is patron saint of the city, the Roman Catholic Archdiocese of Ravenna-Cervia and the Vicariate of the Sea ("Vicariato del Mare"). It was made of Parian marble during the era before the 431 Council of Ephesus, which confirmed Mary's status as Theotokos. According to a legend in the Carte Portuensi, Pietro degli Onesti and the monks of Santa Maria in Porto (the Porto Fuori gate was then by the shoreline) were starting to say matins on Domenica in albis, the first Sunday