Centrality, Constancy and Sincerity

The Doctrine of the Mean (Zhongyong) is a short and philosophically dense Confucian text, originally, like the Great Learning, a chapter of the Book of Rites (Liji), traditionally attributed to Zisi, the grandson of Confucius. Its title is difficult to translate: zhong means the centre, the mean, or equilibrium, and yong means the ordinary, the constant, or the unchanging, so the work concerns the steady holding of the due mean in all things, neither excess nor deficiency, as a lived and constant practice rather than a mere calculation. But the text ranges well beyond a doctrine of moderation into metaphysics. It opens by declaring that what Heaven confers is called human nature, that following this nature is the Way, and that cultivating the Way is education, thereby grounding morality in the cosmic order. Its central and most profound concept is cheng (sincerity, integrity, or authenticity), understood not merely as honesty but as the true, complete realisation of one's Heaven-given nature, which the text presents as the very principle by which Heaven and Earth themselves operate.