Carl Jung, on Art and the Collective Unconscious
The rapid and worldwide growth of a psychological interest over the last two decades shows unmistakably that modern man is turning his attention from outward material things to his own inner processes.
Expressionism in art prophetically anticipated this subjective development, for all art intuitively apprehends coming changes in the collective unconsciousness.
The psychological interest of the present time is an indication that modern man expects something from the psyche which the outer world has not given him: doubtless something which our religion ought to contain, but no longer does contain, at least for modern man.
The Spiritual Problem of Modern Man
Modern Man in Search of Soul, 1933
Collected Works Volume 10