The force of a claim for a human right would indeed be seriously undermined if it were possible to show that it is unlikely to survive open public sc… - Amartya Sen

The Passions and the Interests does not have the policy urgency that a contribution to public decisions may enjoy (as Hirschman's The Strategy of Economic Development eminently does), nor the compulsive immediacy that the exigencies of practical reason generate (as Exit, Voice, and Loyalty superbly portrayed). What then is so special about this book? […] The answer lies not only in the recognition that Hirschman makes us see the ideological foundations of capitalism in a fresh way, but also in the remarkable fact that this freshness is derived from ideas that are more than two-hundred-years old. The basic hypothesis— the articulation and development of which Hirschman investigates—makes the case for capitalism rest on the belief that "it would activate some benign human proclivities at the expense of some malignant ones."

The global reach of Smith's moral and political reasoning is quite a distinctive feature of his thought, but it is strongly supplemented by his belief that all human beings are born with similar potential and, most importantly for policymaking, that the inequalities in the world reflect socially generated, rather than natural, disparities.
There is a vision here that has a remarkably current ring. The continuing global relevance of Smith's ideas is quite astonishing, and it is a tribute to the power of his mind that this global vision is so forcefully presented by someone who, a quarter of a millennium ago, lived most of his life in considerable seclusion in a tiny coastal Scottish town. Smith's analyses and explorations are of critical importance for any society in the world in which issues of morals, politics and economics receive attention. The Theory of Moral Sentiments is a global manifesto of profound significance to the interdependent world in which we live.

John Kenneth Galbraith doesn't get enough praise. The Affluent Society is a great insight, and has become so much a part of our understanding of contemporary capitalism that we forget where it began. It's like reading Hamlet and deciding it's full of quotations.