If you borrow something， try to return it in better shape than you received it. Clean it， sharpen it， fill it up.

事实上，我们都有点破碎，但这没关系。

The concept of a legal right is a complex one, involving not only the existence of a rule but also the existence of a remedy.

Every mathematical problem has a solution; it's just a matter of finding the right perspective.

不要让恐惧阻止你做你想做的事。