It is scarcely necessary to remark that between the two parts of the Parmenidean philosophy—between the doctrine concerning being and the doctrine concerning appearance—there can exist no inner scientific connection. What Parmenides absolutely denies in the first part, and indeed declares to be unutterable, viz., the not-being, the many and the changeable, he yet in the second part admits to have an existence at least in the representation of men. But it is clear that the not-being cannot once exist in the representation, if it does not exist generally and every where, and that the attempt to explain a not-being of the representation, is in complete contradiction with his exclusive recognition of being. This contradiction, this unmediated juxtaposition of being and not-being, of the one and the many, _Zeno_, a scholar of Parmenides, sought to remove, by affirming that from the very conception of being, the sensuous representation, and thus the world of the not-being, are dialectically annihilated. 4. ZENO.—The Eleatic Zeno was born about 500 B. C.; was a scholar of Parmenides, and the earliest prose writer among the Grecian philosophers. He is said to have written in the form of dialogues. He perfected, dialectically, the doctrine of his master, and carried out to the completest extent the abstraction of the Eleatic One, in opposition to the manifoldness and determinateness of the finite. He justified the doctrine of a single, simple, and unchangeable being, in a polemical way, by showing up the contradictions into which the ordinary representations of the phenomenal world become involved. While Parmenides affirms that there is only the One, Zeno shows in his well-known proofs (which unfortunately we cannot here more widely unfold), that the many, the changing, that which has relation to space, or that which has relation to time, is not. While Parmenides affirmed the being, Zeno denied the appearance. On account of these proofs, in which Zeno takes up the conceptions of extension, manifoldness and movement, and shows their inner contradictory nature, Aristotle names him the founder of dialectics. While the philosophizing of Zeno is the completion of the Eleatic principle, so is it at the same time the beginning of its dissolution. Zeno had embraced the opposition of being and existence, of the one and the many, so abstractly, and had carried it so far, that with him the inner contradiction of the Eleatic principle comes forth still more boldly than with Parmenides; for the more logical he is in the denial of the phenomenal world, so much the more striking must be the contradiction, of turning, on the one side, his whole philosophical activity to the refutation of the sensuous representation, while, on the other side, he sets over against it a doctrine which destroys the very possibility of a false representation. SECTION VII. HERACLITUS.