The article begins discussing the misunderstandings of the Anglo-American psychologists' reading, motivated by the empiricist perspective from which they tried to understand the Wundt's psychology. Soon after, explicit the concept of unconscious in Wundt, and it shows its relationship with the rationalism of Leibniz's philosophy. It defends that the understanding of theories and systems in psychology imposes the need of considering of their epistemological and philosophical foundations.
unconscious; Wundt; Leibniz