The first duty of a man is to think for himself.

"The best way to learn mathematics is to do mathematics."

Reality is always more fantastic than fiction.

Sun don't shine forever, but as long as it's here then we might as well shine together.

读书人如同国家的宝物，儒生就像宴席上的佳肴一样，值得珍重。

改变始于愿景，但坚持才能将其变为现实。

未来不可预测的观点每天都在被我们轻易解释过去的能力所削弱。