Jung's collective unconscious

Jung applies Kant's idea of transcendent a priori categories of thought to his concept of archetypes it looks like.

"[the universal motifs of myths] have their origin in the archetype, which in itself is an irrepresentable, unconscious, pre-existent form that seems to be part of the inherited structure of the psyche and can therefore manifest itself spontaneously anywhere, at anytime."

"The archetype in itself is empty and purely formal...a possibility of representation which is given a priori. The representations themselves are not inherited, only the forms, and in that respect they correspond in every way to the instincts, which are also determined in form only."

"It seems to me probable that the real nature of the archetype as such is not capable of being made conscious, that it is transcendent, on which account I call it psychoid."

"[The personal unconscious] comprises contents which are integral components of the individual personality and therefore could just as well be conscious; the second group forms, as it were, an omnipresent, unchanging, and everywhere identical quality or substrata of the psyche per se."

"The deeper 'Layers' of the psyche lose their individual uniqueness as they retreat farther and farther into darkness."

Above quotes from the glossary of Memories, Dreams, Reflections - C.G. Jung