A statement is a means to convey information, a promise is a means to make a commitment.
历史不仅仅是关于事件,而是关于那些经历过这些事件的人。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The saying that a little knowledge is a dangerous thing is, to my mind, a very dangerous adage.  
To be a writer is to be constantly searching.