Mainstream science--as well as religious and cultural institutions--has maintained that men and women evolved in families in which a man's possessions and protection were exchanged for a woman's fertility and fidelity. But this narrative is collapsing. Fewer and fewer couples are getting married, and divorce rates keep climbing as adultery and flagging libido drag down even seemingly solid marriages.How can reality be reconciled with the accepted narrative? It can't be, according to renegade thinkers Christopher Ryan and Cacilda Jethá. While debunking almost everything we "know" about sex, they offer a bold alternative explanation in this provocative and brilliant book.Ryan and Jethá's central contention is that human beings evolved in egalitarian groups that shared food, child care, and, often, sexual partners. Weaving together convergent, frequently overlooked evidence from anthropology, archaeology, primatology, anatomy, and psychosexuality, the authors show how far from human nature monogamy really is. Human beings everywhere and in every era have confronted the same familiar, intimate situations in surprisingly different ways. The authors expose the ancient roots of human sexuality while pointing toward a more optimistic future illuminated by our innate capacities for love, cooperation, and generosity.With intelligence, humor, and wonder, Ryan and Jethá show how our promiscuous past haunts our struggles over monogamy, sexual orientation, and family dynamics. They explore why long-term fidelity can be so difficult for so many; why sexual passion tends to fade even as love deepens; why many middle-aged men risk everything for transient affairs with younger women; why homosexuality persists in the face of standard evolutionary logic; and what the human body reveals about the prehistoric origins of modern sexuality.In the tradition of the best historical and scientific writing, Sex at Dawn unapologetically upends unwarranted assumptions and unfounded conclusions while offering a revolutionary understanding of why we live and love as we do.

    It is impossible not to be drawn in to the provocative (often contentious) discussion that Harvey Mansfield sets before us. This is the first comprehensive study of manliness, a quality both bad and good, mostly male, often intolerant, irrational, and ambitious. Our “gender-neutral society” does not like it but cannot get rid of it.Drawing from science, literature, and philosophy, Mansfield examines the layers of manliness, from vulgar aggression, to assertive manliness, to manliness as virtue, and to philosophical manliness. He shows that manliness seeks and welcomes drama, prefers times of war, conflict, and risk, and brings change or restores order at crucial moments. Manly men in their assertiveness raise issues, bring them to the fore, and make them public and political—as for example, the manliness of the women’s movement.After a wide-ranging tour from stereotypes to Hemingway and Achilles, to Nietzsche, to feminism, and to Plato, the author returns to today’s problem of “unemployed manliness.” Formulating a reasoned defense of a quality hardly obedient to reason, he urges men, and especially women, to understand and accept manliness, and to give it honest and honorable employment.