The best way to learn mathematics is to do mathematics.

音乐救了我的命，现在我想回报它。

世间有无数技艺高超的画家，却画不出内心的伤心。

Believe that life is worth living, and your belief will help create the fact.

Persist in doing what you love, and don't give up easily even when facing difficulties.

我们的科学力量已经超过了我们的精神力量。我们有导弹，但我们的人类道德方向已经偏离。