But Socrates opens out the second and greatest period of Greek philosophy, by reverting to, indeed by indefinitely deepening, the general conviction that Oneness underlies Multiplicity. And he does so through the virtual discovery of, and a ceaseless insistence upon, two great new subject-matters of philosophy: Dialects and Ethics. It is true that in both these respects the Sophists had prepared the ground: they had, before him and all around him, discussed everything from every then conceivable point of view; and they had, at the same time, helped to withdraw man’s attention from pure speculation about physical nature to practical occupation with himself. But the Sophistic Dialectic had ended in itself, in universal negation and scepticism; and the Sophistic Anthropology had, partly as cause, partly as effect of that scepticism, more and more completely narrowed and dragged down all human interest, capacity, and activity to a selfish, materialistic self-aggrandizement and a frank pleasure-seeking. Socrates indeed took over both these subjects; but he did so in a profoundly different spirit, and worked them into a thoroughly antagonistic view of knowledge and of life. Socrates begins, like the Sophists, with the Multiplicity of impression and opinion, which we find occasioned by one and the same question or fact; and like them he refuses to take the Physicists’ short cut of immediate and direct occupation with things and substances, say the elements. Slowly and laboriously he works his way, by the help of Dialectics, (for these have now become a means and not an end,) around and through and into the various apprehensions, and, at last, out of and beyond them, to a satisfactory concept of each thing. And the very means taken to arrive at this concept, and the very test which is applied to the concept, when finally arrived at, for gauging the degree of its finality, both these things help to deepen profoundly the sense of a certain Multiplicity in all Oneness and of a certain Oneness in all Multiplicity. For the means he takes are a careful and (as far as may be) exhaustive and impartial discussion and analysis of all the competing and conflicting notions and connotations occasioned by each matter in dispute; and the test he applies to the final concept, in view of gauging the degree of its finality, is how far this concept reconciles and resolves within its higher unity all such various and contrary aspects suggested by the thing, as have stood the brunt of the previous discussion and have thereby proved themselves true and objective.