Every problem in mathematics is an opportunity to learn something new.

Any human anywhere will blossom in a hundred unexpected talents and capacities simply by being given the opportunity to do so.

一个国家的法律如果不能保证公平公正、不能惩恶扬善、不能保障人民的利益，就不能当做法律。

If you don’t make mistakes, you’re not working on hard enough problems.

The key to making a good film is to have a good script.

耐心是一种美德，我正在学习耐心。这是一门艰难的课程。