No one is an artist unless he carries his picture in his head before painting it.
除非一个人在作画前脑海中已有画面，否则他称不上艺术家。
书籍是智慧的钥匙。
相信一个人不仅仅是个人，这是多么危险的想法。
The essence of mathematics lies in its freedom.
I'm like a dog, I don't speak but I understand.
Success comes when you focus on doing the right things, not just doing things right.