The book provides an overview of Thought from Comte to the most recent. Marx, Weber, Durkheim and Parsons are covered comprehensively. Marx is given a prominent place. A unique feature of this book is that it highlights Immanuel Kant's role in the evolution of Thought. It brings forth major issues in sociology of knowledge. Introducing Nietzsche in a formal and detailed way is another refreshing feature of this book. In an unusual twist, Ayn Rand is covered to bring forth the power of Nietzsche's arguments. Thus the real challengers to Marx are brought on the stage - dismissing Weber as unfit to take on Marx. Freud is covered to highlight the psychological aspects of society. Thus this book takes Thought to its philosophical roots. Why Krishnamurti here? That is the only way of bringing Buddha to the discussion, to get the best face to face. Buddha does stand the tallest, but Kant is a very serious challenger; Nietzsche's irreverence helps clarify Buddha.