Ranging from Durkheim's original lecture in sociology to an excerpt from the work incomplete at his death, these selections illuminate his multiple approaches to the crucial concept of social solidarity and the study of institutions as diverse as the law, morality, and the family. Durkheim's focus on social solidarity convinced him that sociology must investigate the way that individual behavior itself is the product of social forces. As these writings make clear, Durkheim pursued his powerful model of sociology through many fields, eventually synthesizing both materialist and idealist viewpoints into his functionalist model of society.