The best way to learn mathematics is to do mathematics.

The past is a kind of shadow which is always there, whether you choose to ignore it or not.

Efficiency without ethics is empty progress.

Confidence comes from within, and it's something you have to build every day.

一个人真正需要的财富就那么一点点，其余的都是用来炫耀的。

作曲家的传记写在他的乐谱中，而不是在他的信件或日记里。