Mathematics is a living subject, constantly evolving with new ideas and discoveries.

国家一定要有直言进谏的臣子，上级必须有敢于提出反对意见的下级，议论国政的人不停止，各种不同政见的人相互辩论，才可以长久保存国家，使国家兴盛强大。也就是说言论自由是民众的基本权利，每个人都可以提出不同的政见，民众有平等参与政治的权利。

Life is too short to hold grudges.

解释：只有去学习才能懂得世间的道理；如果耻于向人求教，许多东西就会永不知晓。

Once you've accepted your flaws, no one can use them against you.

The future of infrastructure lies in sustainability and smart technology.