To the Editor:

Re “Inequality Is Not Inevitable” (“The Great Divide” series, Sunday Review, June 29):

Joseph E. Stiglitz combines passion and intellect to compose an excellent summary of the inequality issue. Other concerned economists and political thinkers should now move forward.

Mr. Stiglitz cites Thomas Piketty’s “Capital in the Twenty-First Century” and its main theme: that the three decades after World War II, when the income division was much narrower, were an anomaly in the history of capitalism. In Mr. Piketty’s opinion the solution to current inequality is a global wealth tax.

There are no doubt other economically and politically feasible answers. Niall Ferguson on the conservative side and Robert B. Reich on the liberal side, among others, have suggested potential ways to reduce inequality. But the question remains: Why is there no political will to implement any solutions, whatever they may be? Where are the “engaged citizens who can fight to restore a fairer America”?

Mr. Stiglitz has done his part; one hopes that other influential experts and activists will do theirs.