Even in secular and civil contexts, marriage retains sacramental connotations. Yet what moral significance does it have? This book examines its morally salient features -- promise, commitment, care, and contract -- with surprising results. In Part One, "De-Moralizing Marriage," essays on promise and commitment argue that we cannot promise to love and so wedding vows are (mostly) failed promises, and that marriage may be a poor commitment strategy. The book contends with the most influential philosophical accounts of the moral value of marriage to argue that marriage has no inherent moral...