True freedom is not about doing what you want, but about not doing what you don't want to do.
数学是为数学家而写的。
The greatest cruelty is our casual blindness to the despair of others.
暂时不下判断，你就会保持冷静。
真相并不总是美丽的，但寻找真相的过程是。
一本好书是一个永远不会让你失望的朋友。
Language is the most powerful tool we have to shape reality.