Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

数学中最深刻的思想往往源于最简单的观察。

数学中最深刻的定理往往有最简单的表述。

"The universe is a big place, and sometimes you have to make your own rules."

可持续性不再是选择，而是任何希望长期发展的企业的必需品。