Chapter 1, Part 12B - Lieh Tzu

But Ch'ang Lu Tzu laughed at them both, saying: 'Rainbows, clouds and mist, wind and rain, the four seasons -- these are perfected forms of accumulated ether, and go to make up the heavens. Mountains and cliffs, rivers and seas, metals and rocks, fire and timber -- these are perfected forms of agglomerated matter, and constitute the earth.

'Knowing these facts, who can say that they will never be destroyed? Heaven and earth form only a small speck in the midst of the Void, but they are the greatest things in the sum of Being.

'This much is certain: even as their nature is hard to fathom, hard to understand, so they will be slow to pass away, slow to come to an end. He who fears lest they should suddenly fall to pieces is assuredly very far from the truth. He, on the other hand, who says that they will never be destroyed has also not reached the right solution. Heaven and earth must of necessity pass away, but neither will revert to destruction apart from the other.'

The Master Lieh Tzu heard of the discussion, and smiling said: 'He who maintains that Heaven and earth are destructible, and he who upholds the contrary, are both equally at fault. Whether they are destructible or not is something we can never know, though in both cases it will be the same for all alike. The living and the dead, the going and the coming, know nothing of each other's state. Whether destruction awaits the world or no, why should I trouble my head about it?'
~ Lionel Giles translation via Terebess Asia Online ~

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