The two cornerstones of his system of personal conduct were Jen and Li. “Jen” might be defined as “benevolent concern for one's fellow men.” “Li” is a term less easily translated; it combines the notions of etiquette, good manners, and due concern for virtue rather than wealth (and in his personal life he seems to have acted on that principle). In addition, he was the first major philosopher to state the Golden Rule, which he phrased as “Do not do unto others that which you would not have them do unto you.”