We don't inherit the land from our ancestors; we borrow it from our children.

The concept of a black hole firewall challenges our understanding of quantum mechanics and general relativity.

——《民国月刊》出世辞（1913年5月20日)

To be sane in a world of madmen is in itself madness.

爱是一种极其困难的领悟：除了自己之外还有其他真实存在。