The following statement from the concluding chapter of his Phenomenology ofSpirit makes that known: Thus time appears as the very fate and necessity of spirit when it is not in itself complete the necessity of its giving self consciousness a richer share in consciousness, of setting in motion the immediacy of the in itself(the form in which substance is in consciousness), or conversely, of its realizing and revealing the in itself taken as what is inward (and this is what is first inward), that is, vindicating it for the certainty of itself.