Words are not mere sounds or marks， but signs of facts.

"The truth is a mirror, and the mirror is a shadow."

"I am not interested in the beautiful, I am interested in the true."

There is no such thing as a quality problem. There are only problems of people not doing what they are supposed to do.

A key insight in learning theory is that the complexity of a hypothesis class is crucial for generalization.

我希望被人们记住为一个永不放弃的人。

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。

Never be afraid to take risks. The biggest rewards often come from the biggest risks.