Confucius said, " To know that we know what we know, and that we do not know what we do not know, that is true knowledge."
孔子说:“知之为知之,不知为不知,是知也。”
Confucius said, " To know that we know what we know, and that we do not know what we do not know, that is true knowledge."
孔子说:“知之为知之,不知为不知,是知也。”