Sex at Dawn

ess a characteristic I found shocking and confusing the first time I saw it: self-respect. If you make the mistake of holding the gaze of a street monkey in India, Nepal, or Malaysia, you’ll find you’re facing a belligerently intelligent creature whose expression says, with a Robert DeNiro–like

Because of this inequality in unavoidable sacrifice, Darwin reasoned, she is the more hesitant participant, needing to be convinced it’s a good idea—while the male, with his slam-bam-thank-you-ma’am approach to reproduction, is eager to do the convincing.