It is the entire primitive system that finds itself mobilized, requisitioned by a superior power, subjugated by new exterior forces, put in the service of other ends; so true is it, said Nietzsche, that what is called the evolution of a thing is a succession of more or less profound, more or less mutually independent processes of subduing, plus the resistances they encounter, the attempts at transformation for the purpose of defense and reaction, and the results of successful counteractions.