All existing things are really one. We regard those that are beautiful and rare as valuable, and those that are ugly as foul and rotten The foul and rotten may come to be transformed into what is rare and valuable, and the rare and valuable into what is foul and rotten.

ISBN 978-0-231-03147-9. Go away quickly and do not soil me with your presence. (2 tr.

His philosophy can be considered a precursor of relativism in systems of value. He is credited with writing—in part or in whole—a work known by his name the Zhuangzi which expresses a philosophy which is skeptical arguing that life is limited and knowledge to be gained is unlimited.