Xin

Analects 2:22 makes the case for trustworthiness with an image from the roads. I do not know, Confucius says, how a person without xin is to get on. How can a large carriage be made to go without the crossbar pin, or a small carriage without the yoke pin? The pins in question are small components, wooden or bronze, that join the yoke to the shaft: nearly invisible in the assembled vehicle, of negligible cost beside the lacquered body and the matched horses, and absolutely indispensable, because without them the carriage and its motive power are simply two objects standing near each other. The analogy is precise. A person's capacities, talent, learning, strength, wealth, are the carriage; society's cooperative life is the journey; and xin, the reliability of one's word, is the pin by which the one is hitched to the other. Break it and nothing else functions, however splendid. The character for xin is itself a compact argument, joining the graph for person to the graph for speech: trustworthiness is a person standing by their words.

The Analects returns to the theme constantly: Zengzi examines himself daily on whether he has kept faith with friends; a state, Confucius says, can survive the loss of arms and even of food, but not the loss of the people's trust, for without trust there is no standing at all. In the Confucian accounting, xin is not one social grace among many; it is the fastening on which every relationship, commercial, political and personal, actually hangs.

Confucian ethics eventually settled on a canonical enumeration, the five constant virtues, wuchang: ren, humaneness; yi, rightness; li, ritual propriety; zhi, wisdom; and xin, trustworthiness. The first four were grouped by Mencius as the four sprouts native to the human heart; the Han thinker Dong Zhongshu is generally credited with fixing xin as the fifth, completing the set that would be memorized by schoolchildren for two thousand years.

Xin's position in the list repays attention. It is the only member that is essentially relational in its very structure: humaneness, rightness, wisdom and even propriety can be described as states of the agent, but trustworthiness exists only where a word has been given and another person leans on it. The tradition sometimes ranked it accordingly as the completing virtue, the one that makes the others socially real; a humaneness that cannot be relied upon, a rightness that shifts with convenience, are private weather.

Later cosmological schematizers correlated the five virtues with the five phases, five directions and five organs, lodging xin at the center or in the earth phase in most arrangements, the stabilizing element on which the cycle turns. However fanciful the correlations, the placement preserved the old insight of the carriage-pin passage: trust is the fixed point. In contemporary Chinese the word remains everywhere, in credit, in letters, in confidence, so that the Han list's fifth member is, of the five, the one modern life still invokes daily by name.