Book excerpt: "Sex and Sects tells the story of three religiously inspired sexual innovations in America--Shaker celibacy, Mormon polygamy, and the Oneida Community's free love. It explores why these bold experiments rose and then fell primarily over the course of the nineteenth century and almost exclusively within the confines of the new American republic. Rather than view them through a social-scientific lens, Sex and Sects traces their fascinating shared trajectory as they emerged, struggled, institutionalized, and declined in tandem"--