Chapter 23, Part 12B - Chuang Tzu

The man who has had his feet cut off in punishment discards his fancy clothes - because praise and blame no longer touch him. The chained convict climbs the highest peak without fear - because he has abandoned all thought of life and death. These two are submissive and unashamed because they have forgotten other men, and by forgetting other men they have become men of Heaven.

Therefore you may treat such men with respect and they will not be pleased; you may treat them with contumely and they will not be angry. Only because they are one with the Heavenly Harmony can then be like this.

If he who bursts out in anger is not really angry, then his anger is an outburst of nonanger. If he who launches into action is not really acting, then his action is a launching into inaction. He who wishes to be still must calm his energies; he who wishes to be spiritual must compose his mind; he who in his actions wishes to hit the mark must go along with what he cannot help doing. Those things that you cannot help doing - they represent the Way of the sage.
~ Burton Watson translation via Terebess Asia Online ~

Go here to read the introductory post to the chapters of the Book of Chuang Tzu.