The rule of recognition exists as a social fact.
Patience and persistence are the unsung heroes of scientific discovery.
Every word is a step towards understanding.
没有一些你想要的东西是幸福不可或缺的一部分。
最危险的浪费是我们没有意识到的浪费。
The most rewarding part of my job is seeing our medicines make a difference in people's lives.