Here’s a harder quiz

In the last quiz we had on the blog, we offered a signed copy of Freakonomics to the first person to correctly identify the person who was identified at a charity event as the “the most trusted man in America.” It turned out to be way too easy (Walter Cronkite), generating a lot of complaints from blog readers.

So here is another quiz — this one much harder than the first. You will have to think differently to get this one.

Before a recent lecture, I got to shake hands with one of the most famous and beloved nearly-octogenarians in the world.

First one to guess his identity wins a signed copy of the book. More clues to follow if people don’t guess the right answer.