The best mathematics is timeless.

I think music is a great healer. It's something that can make you feel better when you're down.

千丈长的大堤，会因为蝼蚁的小洞而溃决

学得越多，就越意识到自己知道的有多少。

真相总是复杂的，而且很少是纯粹的。