The sentence in Zhuangzi Neipian, the third master of health preservation.

From the original text of Zhuangzi's Three Masters of Health Preservation, "My life is limited, but my knowledge is also limited. With restrictions, there is no restriction, and it is almost there! It's almost enough for people who already know! Good has no near name, and evil has no near punishment. The Governor thinks that he can protect himself, support his relatives all his life, and work for many years. " The writer is Zhuangzi.

Life is limited, but knowledge is infinite (without boundaries), and it is doomed to fail to pursue infinite knowledge with limited life. Zhuangzi advocated "knowing/not knowing", that is, knowledge should be clearly distinguished instead of simply saying "the more the better" or "the less the better". By the way, the more you know, the better; By the way, the less you know, the better Therefore, seeking knowledge is not only a process of increasing knowledge, but also a process of identifying whether the acquired knowledge conforms to Tao and eliminating the knowledge that does not conform to Tao. The "Tao" here can be understood as truth.

Those who already know. Know: I think I know something.

Whether knowledge can be understood as learning knowledge is inconsistent with Zhuangzi's context. Zhuangzi never mentioned that some people pursue infinite knowledge.

The theory of "enjoying everything" has been discussing the problems of small knowledge and big knowledge. Understanding knowledge as "self-knowledge" can echo and confirm each other.

Life is limited, knowledge is infinite, and it is impossible to master infinite knowledge with limited life.

It is really dangerous for people to think that they are great knowers and omniscients, even though they can't master unlimited knowledge.

The harm of self-righteous people.