On Introverted Intuition
"Introverted intuition apprehends the images arising from the a priori inherited foundations of the unconscious. These archetypes, whose innermost nature is inaccessible to experience, are the precipitate of the psychic functioning of the whole ancestral line; the accumulated experiences of organic life in general, a million times repeated, and condensed into type. In these archetypes, therefore, all experiences are represented which have happened on this planet since primeval times. The more frequent and the more intense they were, the more clearly focused they become in the archetype. The archetype would thus be, to borrow from Kant, the noumenon of the image which intuition perceives and, in perceiving, creates.
Since the unconscious is not just something that lies there like a psychic caput mortuum, but co-exists with us and is constantly undergoing transformations which are inwardly connected with the general run of events, introverted intuition, through its perception of these inner processes, can supply certain data which may be of the utmost importance for understanding what is going on in the world. It can even foresee new possibilities in more or less clear outline, as well as events which later actually do happen. Its prophetic foresight is explained by its relation to the archetypes, which represent the laws governing the course of all experienceable things."