"In the The Doctrine of the Mean, one of the writings attributed to Confucius, many of the central doctrines of Confucianism are elaborated. The characteristic of jen is articulated in terms of a cluster of related moral terms including the Five Relationships, the principle of reciprocity (the Golden Rule), and various forms of virtue. The heart of Confucianism is explained here as the adoption of the policies of inculcating virtue in people by the example of tradition and the jen of the superior person. Confucius (551-479 B.C.) sought to impose an integrated socio-ethical order in an attempt to secure the peace among warring states in China. Several talented and influential disciples adopted Confucius' philosophy during his time, but apparently Confucius, himself, never obtained the opportunity to apply his cultural changes from high office. Confucius thought the foundation of social order is to be based on the jen or "human-heartedness" of the chun tzu or "superior man." The path to jen, the highest virtue, is reached through the practice of li, the principles of social order. The ruler is an ideal man or superior man, a chun tzu, who governs by jen. Confucius' ideas gained influence through successive generations of his students and were finally adopted during the Han dynasty six centuries later."