过去是一个陌生的国度；那里的人行事不同。

The greatest prison people live in is the fear of what other people think.

Not everything that is faced can be changed, but nothing can be changed until it is faced.

表示论提供了表达许多数论现象的语言。

If you're not moving forward, you're falling behind.

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.