"Existent" and the "Non-Existent"--then man says: the thing perishes, passes. 10 But no one with impunity lays his profane hands on such awful abstractions as the "Existent" and the "Non-Existent"; the blood freezes slowly as one touches them. There was a day upon which an odd idea suddenly occurred to Parmenides, an idea which seemed to take all value away from his former combinations, so that he felt inclined to throw them aside, like a money bag with old worn-out coins. It is commonly believed that an external impression, in addition to the centrifugal consequence of such ideas as "existent" and "non-existent," has also been co-active in the invention of that day; this impression was an acquaintance with the theology of the old roamer and rhapsodist, the singer of a mystic deification of Nature, the Kolophonian _Xenophanes._ Throughout an extraordinary life Xenophanes lived as a wandering poet and became through his travels a well-informed and most instructive man who knew how to question and how to narrate, for which reason Heraclitus reckoned him amongst the polyhistorians and above all amongst the "historic" natures, in the sense mentioned. Whence and when came to him the mystic bent into the One and the eternally Resting, nobody will be able to compute; perhaps it is only the conception of the finally settled old man, to whom, after the agitation of his erratic wanderings, and after the restless learning and searching for truth, the vision of a divine rest, the permanence of all things within a pantheistic primal peace appears as _the_ highest and greatest ideal. After all it seems to me quite accidental that in the same place in Elea two men lived together for a time, each of whom carried in his head a conception of unity; they formed no school and had nothing in common which perhaps the one might have learned from the other and then might have handed on. For, in the case of these two men, the origin of that conception of unity is quite different, yea opposite; and if either of them has become at all acquainted with the doctrine of the other then, in order to understand it at all, he had to translate it first into his own language. With this translation however the very specific element of the other doctrine was lost. Whereas Parmenides arrived at the unity of the "Existent" purely through an alleged logical consequence and whereas he span that unity out of the ideas "Being" and "Not-Being," Xenophanes was a religious mystic and belonged, with that mystic unity, very properly to the Sixth Century. Although he was no such revolutionising personality as Pythagoras he had nevertheless in his wanderings the same bent and impulse to improve, purify, and cure men. He was the ethical teacher, but still in the stage of the rhapsodist; in a later time he would have been a sophist. In the daring disapproval of the existing customs and valuations he had not his equal in Greece; moreover he did not, like