I never think of the future. It comes soon enough.
How many times must a man look up Before he can see the sky?
在有地位的人面前不要诉说自己的卑贱,否则他会认为在要求他推荐。在富有的人面前不要说自己的贫困,否则他会认为在求他可怜。
I would not dare to say that there is a direct relation between mathematics and madness, but there is no doubt that great mathematicians suffer from maniacal characteristics.