The problem with quantitative easing is that it works in practice but it doesn't work in theory.

有时最深刻的数学来自于玩弄简单的想法，直到它们展现出隐藏的复杂性。

Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work.

想象力比知识更重要。