Chapter 23, Part 7 - Chuang Tzu

"He whose inner being rests in the Great Serenity will send forth a Heavenly light. But though he sends forth a Heavenly light, men will see him as a man and things will see him as a thing.

"When a man has trained himself to this degree, then for the first time he achieves constancy. Because he possesses constancy, men will come to lodge with him and Heaven will be his helper. Those whom men come to lodge with may be called the people of Heaven; those whom Heaven aids may be called the sons of Heaven.

"Learning means learning what cannot be learned; practicing means practicing what cannot be practiced; discriminating means discriminating what cannot be discriminated. Understanding that rests in what it cannot understand is the finest. If you do not attain this goal, then Heaven the Equalizer will destroy you.

"Utilize the bounty of things and let them nourish your body; withdraw into thoughtlessness and in this way give life to your mind; be reverent of what is within and extend this same reverence to others.

"If you do these things and yet are visited by ten thousand evils, then all are Heaven-sent and not the work of man. They should not be enough to destroy your composure; they must not be allowed to enter the Spirit Tower. The Spirit Tower has its guardian, but unless it understands who its guardian is, it cannot be guarded.
~ Burton Watson translation via Terebess Asia Online ~

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