Synopsis The ideas of the subject gives one an insight into the evolution of economic theory, and the formulation of policies which controlled economic life from earliest time to present day. During the course of first six decades of the last century. Many new changes took place in regard to the nature of the science as well as, in the field of economic analysis. The fundamental changes are, economics has come to be recognised as a pure science. In this volume we would confine ourselves to the discussion of the views of some of the most important economists of last one hundred years, especially those who have influenced or are still influencing the directive of economic thought and policy. We have included in this volume economists of different origins, the selection has been made arbitrarily, since in this brief compass, it is not possible to give a summation of economic ideas of all the modern economists.