Embedded Player Over the last two centuries, sex has been at the center of many American legal battles – from contraception and abortion to same-sex marriage. The reasons behind these conflicts can be found in the tension between American attitudes about sex, which have been shaped by centuries of religious beliefs, and the constitutionally mandated separation of church and state. This history is laid out in a new book by Geoffrey Stone, one of the nation's leading constitutional law professors. In the book, he tells the story of the Supreme Court's continuing quest to reconcile deeply rooted religious beliefs with evolving conceptions of individual liberty, personal privacy and human equality. Geoffrey Stone, professor of law at The University of Chicago, joins us in studio.