When I look out the window at my backyard, I can't think of anything interesting to ask. I mean, it's green, it's growing-but nothing occurs to me that any concentrated effort of thought could possibly enlighten. Whereas in economic, statistical, or mathematical kinds of things, I can think lots of questions.
![When I look out the window at my backyard, I can't think of anything interesting to ask. I mean, it's green, it's growing-but nothing occurs to me that any concentrated effort of thought could possibly enlighten.](http://cdn.myquotes.org/images/lawrence-summers/when-i-look-out-the-window-at-my-backyard-i-cant-think-of-anything-interesting-to-ask-i-mean-its.jpg)