It is a woman's outstanding characteristic that she can do anything for the love of a man. But those women who can achieve something important for the love of a thing are most exceptional, because this does not really agree with their nature. Love for a thing is a man's prerogative. But since masculine and feminine elements are united in our human nature, a man can live in the feminine part of himself, I and a woman in her masculine part. None the less the feminine element in man is only something in the background, as is the masculine element in woman. If one lives out the opposite sex in oneself one is living in one's own background, and one's real individuality suffers. A man should live as a man and a woman as a woman.
"Woman in Europe" (1927) In CW 10: Civilization in Transition. P. 243