Confucius replied. "The goal of fasting is inner unity. This means hearing, but not with the ear; hearing, but not with the understanding; hearing with the spirit, with your whole being. The hearing that is only in the ears is one thing. The hearing of the understanding is another. But the hearing of the spirit is not limited to any one faculty, to the ear, or to the mind. Hence it demands the emptiness of all the faculties. And when the faculties are empty, then the whole being listens. There is then a direct grasp of what is right there before you that can never be heard with the ear or understood with the mind. Fasting of the heart empties the faculties, frees you from limitation and from preoccupation. Fasting of the heart begets unity and freedom."

"I see," said Yen Hui. "What was standing in my way was my own self-awareness. If I can begin this fasting of the heart, self-awareness will vanish. Then I will be free from limitation and preoccupation! Is that what you mean?"

"Yes," said Confucius, "that's it! If you can do this, you will be able to go among men in their world without upsetting them. You will not enter into conflict with their ideal image of themselves. If they will listen, sing them a song. If not, keep silent. Don't try to break down their door. Don't try out new medicines on them. Just be there among them, because there is nothing else for you to be but one of them. Then you may have success!
It is easy to stand still and leave no trace, but it is hard to walk without touching the ground. If you follow human methods, you can get away with deception. In the way of Tao, no deception is possible.
You know that one can fly with wings: you have not yet learned about flying without wings. You are familiar with the wisdom of those who know, but you have not yet learned the wisdom of those who know not.
Look at this window: it is nothing but a hole in the wall, but because of it the whole room is full of light. So when the faculties are empty, the heart is full of light. Being full of light it becomes an influence by which others are secretly transformed."