One of the principal motifs of Nietzsche's work is that Kant had not carried out a true critique because he was not able to pose the problem of critique in terms of values.
Gilles DeleuzeThe fundamental problem of political philosophy is still precisely the one that Spinoza saw so clearly (and that Wilhelm Reich rediscovered): Why do men fight for their servitude as stubbornly as though it were their salvation?
Gilles DeleuzeThe conditions of a true critique and a true creation are the same: the destruction of an image of thought which presupposes itself and the genesis of the act of thinking in thought itself. Something in the world forces us to think. This something is an object not of recognition but of a fundamental encounter
Gilles Deleuze