A further description of these two outstanding opposites must be given. The Greek world developed thought as far as to the Idea; the Christian Teutonic world, on the contrary, has comprehended Thought as Spirit; Idea and Spirit are thus the distinguishing features. More particularly the facts are as follows. Because God, the still undetermined and immediate Universal, Being, or objective Thought, jealously allowing nothing to exist beside Him, is the substantial groundwork of all Philosophy, which never alters, but ever sinks more deeply within itself, and through the development of determinations manifests itself and brings to consciousness, we may designate the particular character of the development in the first period of Philosophy by saying that this development is a simple process of determinations, figurations, abstract qualities, issuing from the one ground that potentially already contains the whole. The second stage in this universal principle is the gathering up of the determinations manifested thus, into ideal, concrete unity, in the mode of subjectivity. The first determinations as immediate, were still abstractions, but now the Absolute, as the endlessly self-determining Universal, must furthermore be comprehended as active Thought, and not as the Universal in this determinate character. Hence it is manifested as the totality of determinations and as concrete individuality. Thus, with the _νοῦς_ of Anaxagoras, and still more with Socrates, there commences a subjective totality in which Thought grasps itself, and thinking activity is the fundamental principle.