The bridge, leading from the initially unordered data of experience to the Ideas, consists in certain primeval images pre-existing in the soul — the archetypes of Kepler. [..] It is a question, rather, of forms belonging to the unconscious region of the human soul, images of powerful emotional content, which are not thought, but beheld, as it were, pictorially. The delight one feels, on becoming aware of a new piece of knowledge, arises from the way such pre-existing images fall into congruence with the behavior of the external objects.
- Wolfgang Pauli, on why we fight.