Uncertainty is not an excuse for inaction.
The best way to help someone is to empower them to help themselves.
细胞的语言是用分子和力写成的。
The most important thing in mathematics is to ask the right questions.
The past is never truly past until it has been fully understood.
我是火星人，没人能触及我。
我们都是陌生人，甚至对自己来说也是。