The truth is, we are all capable of great evil and great good. It is the choices we make that define us.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

没有思想的词是死的东西，而没有用词体现的思想仍然是影子。

Every challenge is an opportunity in disguise.

如果你想走得快，独自前行；如果你想走得远，结伴同行。