It is only shallow peoplewho require years to get rid of an emotion. A man who is master of himself, can end a sorrow as easily as he can invent a pleasure.

If we are a good team and know what we want to do, one of us can defeat ten of them.

The best way to learn mathematics is to do mathematics.

人一定要懂得“礼”之后才能产生恭敬之心，产生恭敬之心以后才能有所尊敬，有所礼让。

There was another life that I might have had, but I am having this one.