This is a research that concerns psychoanalytic epistemology, and its theoretic reference is contemporary French thought.
Its main thesis is the ontologic alterity of unconscious, which is transferred into theory by means of a paradoxality and negativity logic.
This paradoxality logic enables to apprehend the contraries which integrate alterity, as complementary and not excluding: they maintain their specificity but there are passages and transformations between one and another.
This passage which transforms one into another determines a limited knowledge, not a total one. We call negative this limit to knowledge, because of nature of the unknown unconscious, and also because of transformations of senses and notions inside the theory.
This integrative analysis of alterity can provide useful methodologic elements for relating theory and clinics, for inter-theoretic and inter-disciplinary relationships, and also for research.
Psychoanalytic epistemology; paradox; negative; Fundamental psychopathology