Sometimes the hardest part isn't letting go but learning to start over.

Conflict is the gadfly of thought. It stirs us to observation and memory. It instigates to invention. It shocks us out of sheeplike passivity, and sets us at noting and contriving.

未来是我们用每一个选择书写的故事。

一个好的经济学家必须既是科学家，又是人文主义者。