The document discusses three major philosophies that emerged in China during the Warring States period: Confucianism, Daoism, and Legalism. Confucianism taught that society should be based on traditional social hierarchies and that people could improve themselves through education. Daoism advocated living simply and in harmony with nature. Legalism viewed people as inherently selfish and taught that strict laws and punishments were needed to control society. The document provides overview of the key teachings of each philosophy.