This article explores the indissoluble connection between the order of being and knowing in the allagmatic epistemology proposed by Gilbert Simondon based on the following thesis: the knowledge of psychic individuation is the condition for the possibility of knowing different modes of individuation. This statement requires the passage through logic, according to the author’s conception of ontogenesis, for describing the analogy and the subject that knows analogically and individuates itself as he knows. Thus, the psychology of individuation is established as a scientific field of work opened up by Simondon and its epistemological implications in the way of conceiving the subject-object relation.