伟大不是成为最好的，而是比以前的自己更好。
Greatness is not about being the best. It's about being better than you were before.
The ultimate test of any economic theory is whether it improves real-world decisions.
"The best revenge is massive success."
我不是信徒，我是怀疑论者。
"The truth is, we are all just trying to figure out how to live."
We are all in the gutter, but some of us are looking at the stars.
最优雅的证明是那些清晰地揭示问题本质的证明。