Zisi

Zisi , born Kong Ji , was a Chinese philosopher. Zisi, who was the only grandson of Confucius, supposedly taught Mencius and wrote the ''Doctrine of the Mean''. He is honorifically called Zisizi .

Where his grandfather began to distinguish between true and supposed knowledge, Zisi proceeded upon meditations on the relativity in human knowledge of the universe. He attempted to analyze as many types of action as possible, and believed that wise people, who are conscious of their moral and intellectual duties, can copy the reality of the universe into themselves.