Iván Szelényi's Yale course Foundations of Modern Social Theory turns to Émile Durkheim's Suicide, the study that made the case for sociology as a discipline distinct from psychology. Szelényi walks through Durkheim's argument that suicide, though it looks like the most private of acts, follows social patterns explainable through group-level factors rather than individual pathology. He covers Durkheim's comparative data on country, marital status, religion, and education, including the puzzle of Protestants having higher suicide rates than Catholics despite more schooling, and Jews defying that pattern through tight religious integration. The lecture builds toward Durkheim's fourfold typology, egoistic, altruistic, anomic, and fatalistic suicide, mapped along axes of social regulation and integration. Recorded in Fall 2009 as lecture 24 of the course, it runs just under an hour and moves chapter by chapter through definitions and each suicide type in turn.