"The area of Ching-shih in the state of Sung grows fine catalpas, cypresses and mulberries. But those of more than one or two spans in girth are cut down for monkey-perches; those of three or four for ridgepoles,
Conversation
and those of seven or eight for the solid sides of coffins for the wealthy. Thus they do not attain the normal term of their lives, and fall in mid-career to the axe. This is the danger of being useful."
— Chuang-tzu