What is essential in the existence of man is the fact that he has emerged from the animal kingdom, from instinctive adaptation, that he has transcended nature—although he never leaves it; he is a part of it—and yet once torn away from nature, he cannot return to it; once thrown out of paradise—a state of original oneness with nature—cherubim with flaming swords block his way, if he should try to return. Man can only go forward by developing his reason, by finding a new harmony, a human one, instead of the prehuman harmony which is irretrievably lost.
