大海就是歷史。
Thou crossest desert lands of barren years to reach the moment of fulfillment.
Theorems are the permanent literature of mathematics.
旅行的用途是用現(xiàn)實來調(diào)節(jié)想象力，而不是想象事情可能是怎樣的，而是看到它們實際是怎樣的。
In mathematics, you don't understand things. You just get used to them.