动力学的方程在用变分法的语言表达时是完全的。

在科学发现中，合作是关键；没有人能独自完成。

I can accept failure, everyone fails at something. But I can't accept not trying.

The invention of the cotton gin was the result of necessity and observation.

I believe in the power of love and kindness.

数学家是将咖啡转化为定理的装置。