As, on the one hand, he defined absolute Being to be simple, making that which is, however, break through and be immediately present in it, on the other hand he philosophizes on appearances; in reference to this certain fragments only are transmitted to us, and such physical opinions as these can have no great interest. They are meant to have no speculative significance any more than are those of our own physicists. When he says in this connection “Out of the earth comes all, and returns to it again, We all have come from earth and water alike, Thus all that grows and takes its rise is only earth and water,”[51] this does not signify existence, physical principles, as did the water of Thales. For Aristotle expressly says, that no one regarded the earth as the absolute principle. 2. PARMINIDES. Parmenides is a striking figure in the Eleatic school, and he arrives at more definite conceptions than does Xenophanes. He was, according to Diogenes (IX. 21), born at Elea of a rich and honourable race. Of his life, however, little is known; Aristotle only says (Met. I. 5) from tradition that he was a scholar of Xenophanes. Sextus Empiricus (adv. Math. VII. 111) calls him a friend (_γνώριμος_) of Xenophanes. Diogenes Laertius further states: “He heard Anaximander and Xenophanes also, but did not follow the latter” (which seems only to refer to his place of abode), “but he lived with Aminias and Diochartes the Pythagorean, attached himself to the latter, and by the former, and not by Xenophanes, was prevailed upon to lead a quiet life.” That the period in which his life falls comes between Xenophanes and Zeno—so that he is contemporaneous with them, though younger than the former and older than the latter—is ascertained. According to Diogenes (IX. 23) he flourished about the 69th Olympiad (504-501 B.C.). What is most important is his journey to Athens with Zeno, where Plato makes them talk with Socrates. This may be accepted generally, but what is strictly historical in it cannot be ascertained. In the Thætetus Plato makes Socrates reply to the invitation to examine the Eleatic system: “For Melissus and the others who assert the All to be One at rest, I have a certain respect; I have even more for Parmenides. For, to speak in Homeric language, he seems to me both venerable and strong. I knew him when he was an old man and I was still quite young, and I heard wonderful things from him.”[52] And in the Platonic Dialogue Parmenides (p. 127. Steph. p. 4. Bekk.) where, as is well known, the conversation is carried on by Parmenides and Socrates, the historic circumstances of this interview are related in detail. “Parmenides was very old, had hair which was quite grey, was beautiful in countenance, about sixty-five years old, and Zeno almost forty.” Tennemann (Vol. I. p. 415) places the journey in the 80th Olympiad (460-457 B.C.). Thus Socrates, since he was born in Olympiad 77, 4 (469 B.C.), would seem to