The mathematician, carried along on his flood of symbols, dealing apparently with purely formal truths, may still reach results of endless importance for our description of the physical universe.
数学家沉浸在他的符号洪流中,表面上处理纯粹的形式真理,仍然可能得出对我们描述物理宇宙具有无尽重要性的结果。
I like to think of mathematics as a kind of poetry.
衣食是人们活着的时候所需要的利益,尚且要有一定的节制;埋葬是人们死后所需要的利益,为什么就单单在这里没有节制呢? 
I've always believed that hard work and perseverance can overcome any obstacle.