Conceptually distinguishing between the various planes of the personal unconscious:
"The experience of the archetype is frequently guarded as the closest personal secret, because it is felt to strike into the very core of one's being . . . . (These experiences) demand to be individually shaped in and by each man's life and work. They are images sprung from the life, the joys and sorrows, of our ancestors; and to life they seek to return, not in experience only, but in deed. Because of their opposition to the conscious mind they cannot be translated straight into our world; hence a way must be found that can mediate between conscious and unconscious reality."
Excerpted from Dr. Carl Gustav Jung's (1875-1961) The Personal and Collective Unconscious (c. 1969).