"Man must accept the tension of the struggle, that his liberation must actively seek to perpetuate itself, without aiming at an impossible state of equilibrium and rest; this does not mean that he ought to prefer the sleep of slavery to this incessant conquest. Whatever the problems raised for him, the setbacks that he will have to assume, and the difficulties with which he will have to struggle, he must reject oppression at any cost."
January 1, 1970
https://en.wikiquote.org/wiki/The_Ethics_of_Ambiguity