The fact that astrology nevertheless yields valid results proves that it is not the apparent positions of the stars which work, but rather the times which are measured or determined by arbitrarily named stellar positions. Time thus proves to be a stream of energy filled with qualities and not, as our philosophy would have it, an abstract concept or precondition of knowledge.

Source:Letter to B. Baur (January 29, 1934), Letters, vol. 1, pp. 138-9
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