"Life is what happens when you're busy making other plans."

I've learned that you can't control everything in life, and that's okay.

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

生物为生存而进行的普遍斗争，不是为了原材料，也不是为了能量——能量以热的形式大量存在于每个物体中（可惜无法转化）；而是为了熵，它通过能量从炽热的太阳转移到寒冷的地球而变得可用。

我们畏惧的事情常常是我们自己促成。