"Another big influence was Samuelson's Foundations, which I read when I stated here at Chicago. It's a "how-to-do-it" book. a great book for first-year graduate students. It says, "Here's the way you do it." It lets you in on the secret of how you play the game, as opposed to cutting you off with big words. I think the combination of Samuelson's book plays Friedman's class was what got me going."