好的研究在于提出正确的问题,而不仅仅是应用花哨的方法。
Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.
"You can't go back and change the beginning, but you can start where you are and change the ending."
你无法回到过去改变开头,但可以从现在开始改变结局。
The problem with quantitative easing is that it works in practice but it doesn't work in theory.