“Sexual intercourse is not intrinsically banal, though pop culture magazines like Esquire and Cosmopolitan would suggest that it is. It is intense, often desperate. Te internal landscape is violent upheaval, a wild and ultimately cruel disregard of human individuality, a brazen, high-strung wanting that is absolute and imperishable, not attached to personality, no respecter of boundaries; ending not in sexual climax but in a human tragedy of failed relationships, vengeful bitterness in an aftermath of sexual heat, personality corroded by too much endurance of undesired, habitual intercourse, conflict, a wearing away of vitality in the numbness finally of habit or compulsion or the loneliness of separation.”

Source: The Red Queen (1993), Ch. 1. Human Nature

"A Painful Case"
Source: Dubliners (1914)
Context: One of his sentences, written two months after his last interview with Mrs. Sinico, read: Love between man and man is impossible because there must not be sexual intercourse and friendship between man and woman is impossible because there must be sexual intercourse.

Source: The Unbearable Lightness of Being

Source: Sexuality and the Psychology of Love

"Bisexuality and the Causes of Homosexuality: The Case of the Sambia"
Context: Social and cultural factors very broadly channel and limit sexual variation in human populations. Sexual laws, codes, and roles do restrict the range and intensity of sexual practices, as far as we can judge from the cross-cultural literature (Herdt and Stoller 1990). Kinsey lent his support to this view; Ford and Beach (1950) documented it in surveys; and Margaret Mead (1961) did so in her ethnographic studies. But biosocial, genetic, and hormonal predispositions also broadly limit and channel. Each culture's theory of the combination of these social and biological constraints we could call its theory of human sexual nature. Yet none of these broad principles, nor the local theory of human sexual nature, entirely explains or predicts a particular person's sexual desires or behaviors. A sexual behavior, that is, does not necessarily indicate an erotic orientation, preference, or desire. The homosexual is not the same as the homoerotic; whether in our society or one very exotic, I will claim, we can distinguish the homosexual from the homoerotic, as Oscar Wilde's case first hinted.

as remembered by William S. Burroughs, in: Ted Morgan, Literary Outlaw. The Life and Times of William S. Burroughs. London: W.W. Norton & Company, 2012, p. 61.

Source: The Beauty Myth (1991), Chapter 5 : 'Sex', p. 162

2000s, Bush's Lincolnian Challenge (2002)