On earth there is nothing great but man；in the man there is nothing great but mind.

We act as though comfort and luxury were the chief requirements of life, when all that we need to make us happy is something to be enthusiastic about.

The best way to learn mathematics is to do mathematics.

梦想不是追逐的，而是创造的。

When people talk, listen completely. Most people never listen.

我们今天所做的每一个决定都在塑造我们明天生活的世界。