"Where is the railway station?" he asks me. "There," I say, pointing at the post office, "and would you please post this letter for me on the way?" "… - Amartya Sen

Reasoning is a robust source of hope and confidence in a world darkened by murky deeds – past and present. It is not hard to see why this is so. Even when we find something immediately upsetting, we can question that response and ask whether it is an appropriate reaction and whether we should really be guided by it. Reasoning can be concerned with the right way of viewing and treating other people, other cultures, other claims, and with examining different grounds for respect and tolerance.

The approach presented in my book The Idea of Justice shares the general Enlightenment interest in relying on reasoning in general and public reasoning in particular, and in this respect there is something very substantially in common between the two alternative disciplines of reasoning that emerged from the intellectual climate of the Enlightenment period, that is, between the Hobbesian and Kantian reasoning (with its successors today, such as the Rawlsian social contract approach) and the reasoning of Smith and Condorcet (with its successors today, such as normative social choice theory).

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.