In the teaching of Socrates both the method and the apprehension of Unity and Multiplicity are as yet, so to speak, in bud. Dialectics are here still chiefly a Method, and hardly as yet a Metaphysic as well. The soul here is as yet but simply one, and virtue is also simply one, and simply and directly identical with knowledge, and hence directly teachable: the very possibility that the will may not or indeed cannot follow, necessarily, automatically, the clear perception of what is really good for it, is one quite foreign to the mind of Socrates, indeed to all Greek thinkers up to the very end of the classical philosophy. In Plato the methods and the results are both, as it were, in flower. Dialectics have here become both a systematic method, and a metaphysical system: not only are Ideas true, and the only means for reaching truth, but they alone are true, they alone fully _are_, and exist as separate self-subsisting realities. And as in the world within, Goodness is, in this profoundly ethical system, seen and willed and striven for as supreme, so also in the world without, is the Idea of Goodness considered as existing supreme from all eternity, and as somehow the Cause of all that truly _is_. It is true that Plato nowhere succeeds in finding in his system a fitting place for a Personal God: for, among other reasons, the Platonic Ideas are all, from the lowest to the highest, but Hypostasized Concepts of Kinds, and are hence, quite consistently, considered to be perfect and supreme, in precise proportion as they are general. The highest Idea will thus of necessity be the most general, the most devoid of all determination, and hence the least personal of them all. It is true also that in his Metaphysics generally he insists so much upon the complete severance and self-sufficingness of the Ideas as over against Appearances, that he prepares his own inevitable failure again to bridge over the gulf that he himself has thus dug too deep and broad. Especially is his half-suggestion misleading, that the transition to Phenomenal Multiplicity is but a further extension of the Multiplicity already observable in the world of Ideas. For these two Multiplicities are evidently entirely different in kind. Each Idea is conceived as necessarily eternal, unchanging, complete and perfect in its own way; whereas each appearance is conceived as necessarily temporal, changing, incomplete, and imperfect even in its own way.