幸福不是一直得到你想要的，而是爱你所拥有的并为此感恩。

The only freedom which deserves the name is that of pursuing our own good in our way， so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.

You don't need a perfect voice to move people; you just need to sing from the heart.

所有谎言中最危险的是稍微扭曲的真理。

悲观主义者在每个机会里看到困难。乐观主义者在每个困难里看到机会。

A wise man once said that you should never believe something just because you want it to be true.

在数学中，提出问题的艺术必须比解决问题更有价值。