Obviously, all religions fall far short of their own ideals.

Man is literally split in two: he has an awareness of his own splendid uniqueness in that he sticks out of nature with a towering majesty, and yet he goes back into the ground a few feet in order blindly and dumbly to rot and disappear forever.

In seeking to avoid evil, humanity is responsible for bringing more evil into the world than organisms could ever do merely by exercising their digestive tracts. It is our ingenuity, rather than our animal nature, that has given our fellow creatures such a bitter earthly fate.

Love is the problem of an animal.

What man really fears is not so much extinction, but extinction with insignificance.

The irony of man's condition is that the deepest need is to be free of the anxiety of death and annihilation; but it is life itself which awakens it, and so we must shrink from being fully alive.

Men use one another to assure their personal victory over death.