Chapter 26, Part 1B - Chuang Tzu

When wood rubs against wood, flames spring up. When metal remains by the side of fire, it melts and flows away. When the yin and yang go awry, then heaven and earth see astounding sights. Then we hear the crash and roll of thunder, and fire comes in the midst of rain and burns up the great pagoda tree.

Delight and sorrow are there to trap man on either side so that he has no escape. Fearful and trembling, he can reach no completion. His mind is as though trussed and suspended between heaven and earth, bewildered and lost in delusion. Profit and loss rub against each other and light the countless fires that burn up the inner harmony of the mass of men. The moon cannot put out the fire, so that in time all is consumed and the Way comes to an end.
~ Burton Watson translation via Terebess Asia Online ~

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