Chuang Tzu, personal name Chou, lived in the fourth and third centuries BC and held a petty official post while China's feudal states quarrelled around him. The historian Ssu-ma Ch'ien records that his doctrines rested on the sayings of Lao Tzu, that his writing was mostly allegorical, and that the best scholars of the age could not refute his attacks on the Confucian and Mihist schools. The book that bears his name makes its case almost entirely through story and dialogue: talking birds and trees, monkey keepers, cooks, and his sparring partner, the schoolman Hui Tzu.
The opening chapter sets the scale. A fish many thousand li in size changes into the rukh, a bird whose flight to the southern ocean takes six months; a cicada and a quail laugh at it, since they barely clear the trees and reeds and cannot imagine what the climb is for. Small knowledge, Chuang Tzu concludes, has not the compass of great knowledge: the mushroom of a morning knows nothing of day and night. The theme returns in the Autumn Floods chapter, where the river spirit, swollen with pride, reaches the sea and learns his own insignificance. You cannot speak of the ocean to a frog in a well; its sphere is too narrow, and so, in some direction, is everyone's.
The second chapter pushes relativity to its limit. Affirmative and negative arise together; a man sleeping in a damp place sickens while an eel thrives there, so no habitat, diet, or standard of beauty is absolutely right. The sage therefore rejects the distinctions of this and that and rests at the axis of Tao, where positive and negative blend into one. Wearing out the mind insisting on such distinctions, he says, is Three in the Morning: monkeys raged at three chestnuts in the morning and four at night, then rejoiced at four and three, though the total never moved. The chapter ends with Chuang Tzu dreaming he is a butterfly and waking unsure whether he is a man who dreamt or a butterfly now dreaming.
Against a world that ranks everything by usefulness, the book defends the useless. Hui Tzu smashes a giant gourd because it makes a poor ladle, never thinking to float it as a boat; one salve for chapped hands wins a stranger a title while its inventors keep washing silk, since the value of a thing lies in its application. A gnarled oak survives precisely because no carpenter will look at it, while fruit trees injure their own lives by their value and perish in mid-career. Skill, meanwhile, follows the grain rather than forcing it: Prince Hui's cook has used one chopper for nineteen years because he works through the natural openings of the joints instead of hacking through bone.
The freedom all this buys shows in Chuang Tzu's own life. Asked while fishing to take charge of the Ch'u State, he replies that a sacred tortoise would rather be alive and wagging its tail in the mud than dead and venerated in a chest, and goes on fishing. When his wife dies he drums on a bowl and sings, reasoning that her death is one more change in a sequence like the seasons. Perfect happiness, the book says, is the absence of happiness, found in inaction rather than striving; Ssu-ma Ch'ien's complaint that no ruler could apply such teachings to any definite use states the point exactly. This is not a program for governing but a way of roaming at ease through a world where nothing stays fixed.