Existential estrangement In the thought of Paul Tillich, the human condition of being dependent upon the ground of being for existence and yet estranged from the ground of being by virtue of not being what one essentially is and ought to be. Existential humanity Human nature as found in the current state of human beings. Existential humanity contrasts with essential humanity—that is, human nature as God originally intended and created it. Existentialism A philosophy that emphasizes existence over