对天资在中等程度以上的人，可以和他谈论高深的学问；而对于中等以下天资的人，则不可以和他谈论高深的学问。

"The world is a fine place and worth the fighting for."

蓬草长在麻地里，不用扶它也能挺立；把白沙放在黑土里，白沙也就变成黑的了。这两个例子说明，环境对一个人的影响，是非常大的，所以才有了《孟母三迁》的故事。

The only thing that stands between a man and what he wants from life is often merely the will to try it and the faith to believe that it is possible.

The greatest thing you'll ever learn is just to love and be loved in return.

The true test of a mathematical idea is its ability to inspire further questions.

Silence speaks louder than words in the realm of art.