Instead of representing difference by subordinating it to the identity of concepts, and thereby to the resemblance of perception, the opposition of predicates and the analogy of judgement, they liberate it and cause it to evolve in positive systems in which different is related to different, making divergence, disparity and decentring so many objects of affirmation which rupture the framework of conceptual representation. The powers of repetition include displacement and disguise, just as difference includes power of divergence and decentring.