The Government of the United States is a definite Government, confined to specified objects. It is not like the state governments, whose powers are more general.

数学是人类精神最美丽和最强大的创造。

永远不要放弃你真正想要的东西。等待很难，但后悔更难。

Growth comes from embracing change, not resisting it.

一个人的心是只服从他自己的，你想束缚它，结果却释放了它；如果让它自由自在的话，你反而把它束缚得紧紧的了。

Simplicity is the ultimate sophistication.

I want to put a ding in the universe.