Brave doesn't mean you're not scared. It means you go on even though you're scared.
我们手里的金钱是保持自由的一种工具;我们所追求的金钱,则是使自己当奴隶的一种工具。
The most rewarding part of my job is seeing our medicines make a difference in people's lives.
科学最有价值的部分是看到你的工作帮助他人。