If you’re not willing to be unpopular for being right, then you don’t deserve to be right.

The beauty of mathematics lies in its ability to describe the universe in the most elegant way possible.

Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them—and then, the opportunity to choose.

教育的回报太遥远，而今天的生计太紧迫。

我不是政治家，我只是一个关心他人的人。

地球并非刚体，其对力的响应必须用适用于可变形介质的方法来处理。