_Anaxagoras_, who, as has been already stated, was a pupil of Anaximenes, was born at Clazomenæ, in Ionia, about B.C. 499. He removed to Athens at the time of the Persian war, where he became intimate with Pericles, who defended him, though unsuccessfully, when he was prosecuted for impiety: he was fined five talents, and banished from the city; on which he retired to Lampsacus, where he died at the age of 72. He differed from his predecessors of the Ionic School, and sought for a higher cause of all things than matter: this cause he considered to be νοῦς, _intelligence_, or _mind_. Not that he thought this νοῦς to be the creator of the world, but only that principle which arranged it, and gave it motion; for his idea was, that matter had existed from all eternity, but that, before the νοῦς arranged it, it was all in a state of chaotic confusion, and full of an infinite number of homogeneous and heterogeneous parts; then the νοῦς separated the homogeneous parts from the heterogeneous, and in this manner the world was produced. This separation, however, he taught, was made in such a manner that everything contains in itself parts of other things, or heterogeneous elements; and is what it is only on account of certain homogeneous parts which constitute its predominant and real character. _Pythagoras_ was earlier than Anaxagoras, though this latter has been mentioned before him to avoid breaking the continuity of the Ionic School. His father’s name was Mnesarchus, and he was born at Samos about 570 B.C., though some accounts make him earlier. He is said by some writers to have been a pupil of Thales, by others of Anaximander, or of Pherecydes of Scyros. He was a man of great learning, as a geometrician, mathematician, astronomer, and musician; a great traveller, having visited Egypt and Babylon, and, according to some accounts, penetrated as far as India. Many of his peculiar tenets are believed to have been derived from the Tyrrhenian Pelasgians, with whom he is said to have been connected. His contemporaries at Crotona in South Italy, where he lived, looked upon him as a man peculiarly connected with the gods; and some of them even identified him with the Hyperborean Apollo. He himself is said to have laid claim to the gifts of divination and prophecy. The religious element was clearly predominant in his character. Grote says of him, “In his prominent vocation, analogous to that of Epimenides, Orpheus, or Melampus, he appears as the revealer of a mode of life calculated to raise his disciples above the level of mankind, and to recommend them to the favour of the gods.” (Hist. of Greece, iv. p. 529.)