Chapter 28, Part 6C - Chuang Tzu

Confucius said to Yen Hui, "Come here, Hui. Your family is poor and your position very lowly. Why don't you become an official?"

Yen Hui replied, "I have no desire to become an official. I have fifty mou of farmland outside the outer wall," which is enough to provide me with porridge and gruel, and I have ten mou of farmland inside the outer wall, which is enough to keep me in silk and hemp. Playing my lute gives me enjoyment enough, studying the Way of the Master gives me happiness enough. I have no desire to become an official."

Confucius' face took on a sheepish expression and he said, "Excellent, Hui - this determination of yours! I have heard that he who knows what is enough will not let himself be entangled by thoughts of gain; that he who really understands how to find satisfaction will not be afraid of other kinds of loss; and that he who practices the cultivation of what is within him will not be ashamed because he holds no position in society. I have been preaching these ideas for a long time, but now for the first time I see them realized in you, Hui. This is what have gained."
~ Burton Watson translation via Terebess Asia Online ~

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