Henry Paulson, then the Treasury secretary, in his office last September, the month Lehman fell and the bailout took shape. By Nigel Parry/CPi Syndication.

It was February 2008, and Henry M. Paulson Jr., a prince of Wall Street turned secretary of the Treasury, was reflecting on his biggest achievement to date: a $168 billion economic-stimulus package that had passed Congress four days earlier after swift, bipartisan prog ress through both houses. In light of all the later twists and turns that the global financial system and the national economy took, this measure would come to seem quaint and fainthearted. But at the time, it was a very big deal indeed, and Paulson felt justifiably proud. The stimulus had been his baby. Paulson had persuaded George W. Bush, whose relations with both parties in Congress were by then close to toxic, to articulate only the broadest principles, and not to present a detailed plan. Paulson himself, in endless night and weekend negotiations with congressional leaders, had delivered the final package.

“Nancy Pelosi to me was a wonder in this deal, and she was available 24-7, anytime I called her on the cell phone,” Paulson told me, his hulking frame unfolding in a comfortable chair in his office at the Treasury, dominated by an oil portrait of his first pred e ces sor, Alexander Hamilton. “She was engaged, she was decisive, and she was really willing to just get involved with all of her people on a hands-on basis.” Paulson paused. “Now let me … I’ll be there in one minute … Let me just make a … I have been, you know … I finished this thing on Thursday night, flew over to Tokyo, flew back, and I’m battling a bit of a stomach problem.”