Zhuangzi replied, 'Have you never seen a wildcat or a weasel? There it lies, crouching and low, till the wanderer approaches; east and west it leaps about, avoiding neither what is high nor what is low, till it is caught in a trap, or dies in a net. Again there is the Yak, so large that it is like a cloud hanging in the sky. It is large indeed, but it cannot catch mice. You, Sir, have a large tree and are troubled because it is of no use - why do you not plant it in a tract where there is nothing else, or in a wide and barren wild? There you might saunter idly by its side, or in the enjoyment of untroubled ease sleep beneath it. Neither bill nor axe would shorten its existence; there would be nothing to injure it. What is there in its uselessness to cause you distress?'