I always believe that the best is yet to come.

Do what you can, with what you have, where you are.

The best way to find out if you can trust somebody is to trust them.

A Jewish man with parents alive is a fifteen-year-old boy, and will remain a fifteen-year-old boy until they die!

量子电动力学的发展表明，粒子的概念并不像曾经认为的那样简单。

理论必须是美丽的。