Diane Keaton

All right, let's say that there is no God, and each man is free to exactly as he chooses. Well, what prevents you from murdering somebody? –Well, murder is immoral. –Immorality is subjective. –Yes, but subjectivity is objective. –Not in any rational scheme of perception. –Perception is irrational and implies immanence. –But judgment of any system, or a priori relation of phenomena, exists in any rational or metaphysical, or at least epistemological, contradiction to an abstracted empirical concept such as being, or to be, or to occur in the thing itself, or of the thing itself! –Yeah, I've said that many times.