"There is a physical as well as a psychological dimension...On the physical level, you are obviously not whole, nor will you ever be: You are either a man or a woman, which is to say, one-half of the whole. On this level, the longing for wholeness - the return to oneness - manifests as male-female attraction, man's need for a woman, woman's need for a man. It is an almost irresistible urge for union with the opposite energy polarity. p. 95"
January 1, 1970
https://en.wikiquote.org/wiki/The_Power_of_Now