This book's thirty essays explore philosophically the nature and morality of sexual perversion, cybersex, masturbation, homosexuality, contraception, same-sex marriage, promiscuity, pedophilia, date rape, sexual objectification, teacher-student relationships, pornography, and prostitution. Authors include Martha Nussbaum, Thomas Nagel, Alan Goldman, John Finnis, Sallie Tisdale, Robin West, Alan Wertheimer, John Corvino, Cheshire Calhoun, Jerome Neu, and Alan Soble, among others. A valuable resource for sex researchers as well as undergraduate courses in the philosophy of sex.