The essays in this collection, on stratification, organization and the discipline of sociology, all bear upon a general theoretical question: what models of rationality are necessary or suitable to explain individual and collective action in institutional contexts? Professor Stinchcombe was one of the first sociologists to write on this question; and this collection includes a new essay which takes account of recent work done in the tradition Stinchcombe did much to institute. The first group of essays - on class, stratification and mobility - addresses core problems of the discipline and offers imaginative conceptualizations with interesting empirical consequences. The second section - essays on the sociology of organizations - displays, like the first, Stinchcombe's wide knowledge of sociological traditions from structuralism to Marxism. The final section, 'comments on the discipline', deepens the readers understanding of sociological theorizing by presenting different modes of analysis of universities and research institutions and providing challenging, and often funny, insights into the subject.