And then they eat the apple, the knowledge of the opposites. And when they discover they are different, the man and woman cover their shame. You see, they had not thought of themselves as opposites. Male and female is one opposition. Another opposition is the human and God. Good and evil is a third opposition. The primary oppositions are the sexual and that between human beings and God. Then comes the idea of good and evil in the world. And so Adam and eve have thrown themselves out of the garden of timeless unity, you might say, just by that act of recognizing duality. To move out into the world, you have to act in terms of pairs of opposites.
Joseph Campbell THE POWER OF MYTH p. 48f