Anaxagoras of Clazomenae (circa. 500 B.C.-428 B.C.) was reportedly the first Presocratic philosopher to settle in Athens. He was a friend of Pericles and his ideas are reflected in the works of Sophocles and Aristophanes. Anaxagoras asserted that Mind is the ordering principle of the cosmos, he explained solar eclipses, and he wrote on a myriad of astronomical, meteorological, and biological phenomena. His metaphysical claim that everything is in everything and his rejection of the possibility of coming to be or passing away are fundamental to all his other views. Because of his philosophical doctrines, Anaxagoras was condemned for impiety and exiled from Athens.