There was a time, long before the age of John Kennedy and Bill Clinton, when world leaders didn't risk their careers surreptitiously pursuing sex. They pursued it openly and risklessly. The Roman biographer Suetonius had this to say about the Emperor Augustus: "His friends used to behave like Toranius, the slave dealer, in arranging his pleasures for him--they would strip grown girls of their clothes and inspect them as though they were for sale."
In ancient China, imperial gratification was a tidier affair. An Emperor in the Chou dynasty had 37 wives and 81 concubines. Harem administrators kept track of menstrual...