译文：做将帅的切勿骄傲自大，如果骄傲自大，待人接物就会有不周道的地方，有失礼之处，一朝失礼就会众叛亲离，人心愤懑相怨。

I always try to learn from my mistakes.

The challenge in computer science is to bridge the gap between the theoretical models and practical applications.

The purpose of mental activity is to guide action.

过去了的再也不能挽救，未来的还是可能补回。