The crucial question which confronts us in psychology and other aspects of the science of man is precisely this chasm between what is abstractly true and what is existentially real for the given living person.

p. 13; also published in The Discovery of Being : Writings in Existential Psychology (1983), Part II : The Cultural Background, Ch. 5 : Kierkegaard, Nietzsche, and Freud, p. 52 - Existence (1958)