What a Century-Old Sex Manual Got Right
In 1926, a widely respected Dutch gynecologist named Theodoor Hendrik van de Velde published a manual whose aim was to explain the vital role of sex in marriage. “What husband and wife who love one another seek to achieve in their most intimate bodily communion,” he wrote, is “a means of expression that makes them One.” The book, Ideal Marriage: Its Physiology and Technique, was addressed mostly to men—and became a best seller.