What would Sociology be without its great sociological thinkers who have contributed so much to this mother of social sciences? social thought provides general theories to explain actions and behaviour of society as a whole, encompassing sociological, political, and philosophical ideas. Social theory is used to make distinctions and generalizations among different types of societies, and to analyze modernity as it has emerged in the past few centuries. the seminal social thinkers of the nineteenth century August Comte Herbert Spencer, Emile Durkheim, Max Weber, Karl Marx and Sigmund Freud all believed that religion would gradually fade in importance and cease to be significant with the advent of industrial society. They were far from Alone; ever since the Age of the Enlightenment, Leading figures in philosophy, Anthropology, and psychology have postulated that theological superstitions, symbolical liturgical rituals, and sacred practices are the product of the past that will be outgrown in the modern era. the Present work is a treatise on the lives and contributions of world great social Thinkers It should be of immense interest and inspiration for all the students, academics and general readers alike