Chapter 28, Part 10B - Chuang Tzu

"We have heard that the gentlemen of old, if they happened upon a well-ordered age, did not run away from public office; but if they encountered an age of disorder, they did not try to hold on to office at any cost. Now the world is in darkness and the virtue of the Chou in decline. Rather than remain side by side with the Chou and defile our bodies, it would be better to run away and thus protect the purity of our conduct!" The two gentlemen thereupon went north as far as Mount Shou-yang, where they eventually died of starvation.

Men such as Po Yi and Shu Ch'i will have nothing to do with wealth and eminence if they can possibly avoid it. To be lofty in principle and meticulous in conduct, delighting in one's will alone without stooping to serve the world-such was the ideal of these two gentlemen.
~ Burton Watson translation via Terebess Asia Online ~

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