The past is always a rebuke to the present.
过去总是对现在的斥责。
If you can dream it, you can do it.
The only way to learn mathematics is to do mathematics.
The only way to avoid being miserable is not to have enough leisure to wonder whether you are happy or not.
The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it.
我不会因为累而停止，我会因为完成而停止。
You have to believe in yourself when no one else does.