Obama will always be our first black president. But can he be one of our few great presidents? He is going to have his chance because our greatest presidents are those who assumed the office at some of our darkest hours and at the bottom of some of our deepest holes.

“Taking office at a time of crisis doesn’t guarantee greatness, but it can be an occasion for it,” argued the Harvard University political philosopher Michael Sandel. “That was certainly the case with Lincoln, F.D.R. and Truman.” Part of F.D.R.’s greatness, though, “was that he gradually wove a new governing political philosophy — the New Deal — out of the rubble and political disarray of the economic depression he inherited.” Obama will need to do the same, but these things take time.

Op-Ed Columnist – Finishing Our Work – NYTimes.com