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The Great Learning was one of the "Four Books" in Confucianism. It consists of a short main text attributed to the teachings of Confucius and then ten commentary chapters accredited to one of Confucius' disciples, Zengzi.
The Doctrine of the Mean is both a doctrine of Confucianism and also the title of one of the Four Books of Confucian philosophy. The text is attributed to Zisi, the only grandson of Confucius.