One of the twentieth century's most controversial sexologists--or "fuckologists," to use his own memorable term--John Money was considered a trailblazing scientist and sexual libertarian by some, but damned by others as a fraud and a pervert. Money invented the concept of gender in the 1950s, yet fought its uptake by feminists. He backed surgical treatments for transsexuality, but argued that gender roles were set by reproductive capacity. He shaped...