Fools are the ones who cannot change their minds.
The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man.
我不怕辛苦，最怕的是没机会。
我在大学的时候，一直想参与做能够改变世界的事情。而现在我就在做这样的事情。
探索材料的拓扑特性不仅仅是理解它们当前的属性，还包括预测和设计新的功能。
【译文】 曾子说：“我每天都要多次提醒自己：工作是否敬业？交友是否守信？知识是否用于实践？”