In China, Yellow Emperor is regarded as the humanistic primogenitor.[citation needed] Sage kings such as Yao and Shun are humanistic figures as recorded.[citation needed] King Wu of Zhou has the famous saying: "Humanity is the Ling (efficacious essence) of the world (among all)." Among them Duke of Zhou, respected as a founder of Rujia (Confucianism), is especially prominent and pioneering in humanistic thought. His words were recorded in the Book of History as follows (translation):[citation needed]