知不知，上；不知知，病。
聖人不病，以其病病，是以不病。
明智之人明了卻不自滿，智慧之所在；不知之人以為已知，此即缺失。
聖者的完美在於他們認識自己的缺失。正是因為他們承認自己的不足，才能達到完美。
To comprehend without assuming knowledge, that is wisdom; to lack understanding but assume knowledge, that is a flaw. (Knowing but not thinking one knows, that is wise; not knowing but thinking one knows,
