Das Wahre ist das Ganze.

The final two lines are a rendering of Schiller's Die Freundschaft.

The significance of that 'absolute commandment', know thyself - whether we look at it in itself or under the historical circumstances of its first utterance - …

But the other side of its Becoming, History, is a conscious, self-meditating process - Spirit emptied out into Time; but this externalization, this kenosis, is…