经济周期的福利成本并非周期本身，而是个体无法随时间平滑消费的能力。

设定新目标或做新梦想永远不会太老。

真正的创新发生在学科的交叉点。

宇宙是一个整体。

To understand mathematics is to understand the fabric of reality.

The only freedom which deserves the name is that of pursuing our own good in our own way， so long as we do not attempt to deprive others of theirs， or impede their efforts to obtain it.

真正的进步不仅仅以产量衡量，更以我们创造的积极影响来衡量。