Zeno’s dialectic is limited to Metaphysics; later, with the Sophists, it became general. We here leave the Eleatic school, which perpetuates itself in Leucippus and, on the other side, in the Sophists, in such a way that these last extended the Eleatic conceptions to all reality, and gave to it the relation of consciousness; the former, however, as one who later on worked out the Notion in its abstraction, makes a physical application of it, and one which is opposed to consciousness. There are several other Eleatics mentioned, to Tennemann’s surprise, who, however, cannot interest us. “It is so unexpected,” he says (Vol. I., p. 190), “that the Eleatic system should find disciples; and yet Sextus mentions a certain Xeniades.” D. HERACLITUS. If we put aside the Ionics, who did not understand the Absolute as Thought, and the Pythagoreans likewise, we have the pure Being of the Eleatics, and the dialectic which denies all finite relationships. Thought to the latter is the process of such manifestations; the world in itself is the apparent, and pure Being alone the true. The dialectic of Zeno thus lays hold of the determinations which rest in the content itself, but it may, in so far, also be called subjective dialectic, inasmuch as it rests in the contemplative subject, and the one, without this movement of the dialectic, is abstract identity. The next step from the existence of the dialectic as movement in the subject, is that it must necessarily itself become objective. If Aristotle blames Thales for doing away with motion, because change cannot be understood from Being, and likewise misses the actual in the Pythagorean numbers and Platonic Ideas, taken as the substances of the things which participate in them, Heraclitus at least understands the absolute as just this process of the dialectic. The dialectic is thus thre-fold: (_α_) the external dialectic, a reasoning which goes over and over again without ever reaching the soul of the thing; (_β_) immanent dialectic of the object, but falling within the contemplation of the subject; (_γ_) the objectivity of Heraclitus which takes the dialectic itself as principle. The advance requisite and made by Heraclitus is the progression from Being as the first immediate thought, to the category of Becoming as the second. This is the first concrete, the Absolute, as in it the unity of opposites. Thus with Heraclitus the philosophic Idea is to be met with in its speculative form; the reasoning of Parmenides and Zeno is abstract understanding. Heraclitus was thus universally esteemed a deep philosopher and even was decried as such. Here we see land; there is no proposition of Heraclitus which I have not adopted in my Logic.