Mathematics is the art of giving the same name to different things.
数学是给不同事物起相同名字的艺术。
Every tree planted today is a promise to tomorrow.
做数学的艺术在于找到包含所有普遍性萌芽的特殊情况。
A novelist must be a psychologist, but a psychologist of a special kind—one who understands the souls of men and women as if he had made them.
艺术中唯一的规则就是没有规则。
The world is mostly right. The world is mostly wrong.