What is it that truly makes you human? What is the greatest threat to your humanness? Anthropology, the study of man, is anything but a unified discipline. Where we end up with our conclusions depends on where we start with our first assumptions. Existentialist philosopher, Jean-Paul Sartre, began his anthropology with the rejection of God. And from that we are left with a philosophy of despair, the ramifications of which pervade our culture to this day. In this message, Dr. Sproul examines the ideas of Sartre and Heidegger, exposing the fundamental danger of existentialism.