The effort of woman to realize this idea of pairing is so fundamentally
opposed to that conception of innocence and purity, the higher virginity
which man's erotic nature has demanded from women, that not all his
erotic incense would have obscured her real nature but for one factor. I
have now to explain this factor which has veiled from man the true
nature of woman, and which in itself is one of the deepest problems of
woman, I mean her absolute duplicity. Her pairing instinct and her
duplicity, the latter so great as to conceal even from woman herself
what is the real essence of her nature, must be explained together. . .