预测未来的唯一方法就是创造未来。
A mathematician is a device for turning coffee into theorems.
Less is more only when more is too much.
有两样东西,人们越是经常持久地对之凝神思索,它们就越是使内心充满常新而日增的惊奇和敬畏:我头上的星空和我心中的道德律。