interested in progressive education, especially providing information to young people on the topic of sexual education. For Carpenter, sexual education meant forwarding a clear analysis of the ways in which sex and gender were used to oppress women, contained in Carpenter's radical work Love's Coming-of-Age. In it he argued that a just and equal society must promote the sexual and economic freedom of women. The main crux of his analysis centred on the negative effects of the institution of marriage. He regarded marriage in England as both enforced celibacy and a form of prostitution. The best-known British advocate of free love was the philosopher Bertrand Russell, later Third Earl Russell, who said that he did not believe he really knew a woman until he had made love with her. Russell consistently addressed aspects of free love throughout his voluminous writings, and was not personally content with conventional monogamy until extreme old age. His most famous work on the subject was Marriage and Morals, published in 1929. The book heavily criticizes the Victorian notions of morality regarding sex and marriage. Russell argued that the laws and ideas about sex of his time were a potpourri from various sources, which were no longer valid with the advent of contraception, as the sexual acts are now separated from the conception. He argued that family is most important for the welfare of children, and as such, a man and a woman should be considered bound only after her first pregnancy. Marriage and Morals prompted vigorous protests and denunciations against Russell shortly after the book's publication. A decade later, the book cost him his professorial appointment at the City College of New York due to a court judgment that his opinions made him "morally unfit" to teach. Contrary to what many people believed, Russell did not advocate an extreme libertine position. Instead, he felt that sex, although a natural impulse like hunger or thirst, involves more than that, because no one is "satisfied by the bare sexual act". He argued that abstinence enhances the pleasure of sex, which is better when it "has a large psychical element than when it is purely physical". Russell noted that for a marriage to work requires that there "be a feeling of complete equality on both sides; there must be no interference with mutual freedom; there must be the most complete physical and mental intimacy; and there must be