"Books are the mirrors of the soul."

Don't ever let somebody tell you you can't do something, not even me.

In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.

译文：我本来是一介平民，在南阳务农亲耕，只想在乱世中苟且保全性命，不谋求在诸侯之中闻名显达。

这门崇高科学的迷人魅力，只有在那些有勇气深入其中的人面前才会展现出全部的美。

林业的未来在于平衡经济增长与生态保护。

在危机时期，真正的领导力体现在能够清晰而坚定地做出艰难决策。