他人的心是一片幽暗的森林，无论它离我们自己多近。
The heart of another is a dark forest, always, no matter how close it has been to one’s own.
All earthly existence must ultimately be contained in a book.
Our greatest ability as humans is not to change the world, but to change ourselves.
原文英文：The most merciful thing in the world， I think， is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity， and it was not meant that we should voyage far.
The best way to understand a program is to try to change it.