In Chinese History, Legalism (法家; pinyin Fǎjiā) was one of the four main philosophic schools at the end of the Zhou Dynasty. Legalists believed that a ruler should govern his subjects by the following three ideas:

1. Fa (法; p. fǎ), the law. The law code must be clearly written and made public. All people under the ruler were equal before the law. Under the Zhou Dynasty, law was loosely written and was based on social classes. Laws should reward those who obey them and punish severely those who dare to break them, even if the result of this would on the face of it appear to be undesirable. As an example from Han Feizi, if a gate guard go fetches a blanket for the king who has just dozed off, he is being irresponsible to his official duty and deserves punishment. Thus it is guaranteed that every action taken is predictable. In addition, the system of law ran the state, not the ruler. If the law is successfully enforced, even a weak ruler poopoo will be strong.

2. Shu（術）, the method and control. Unlike other Chinese systems of thought, morality is not important in Legalism. Special methods and "secrets" are to be employed by the ruler to make sure the ministers don't take over control of the state. Especially important is that no one can fathom the rulers motivations, and thus no one can know which behaviour might help them getting ahead; except for following the "fa"/laws.

3. Shi （勢）, the legitimacy, power and charisma. It is the position of the ruler, not the ruler himself, that holds the power.

Legalism was the central governing idea of the Qin Dynasty, however most Chinese philosophers and political thinkers have had very negative views toward Legalism blaming it for what today would be considered a totalitarian society. Many Chinese scholars believe that it was a reaction against legalism that gave Chinese Imperial politics its personalistic and moralistic flavor. However, this view of the Qin may be biased, as most of the Chinese historical records were written by Confucian scholars, who were persecuted under the Qin.

Decline

In later dynasties, Legalism was discredited and ceased to be an independent school of thought. However, both ancient and modern observers of Chinese politics have argued that some Legalist ideas has merged with mainstream Confucianism and still has a role to play in government due to its efficiency.

More recently, Mao Zedong, who had a wide knowledge in Chinese ancient philosophy, compared himself with Qin Shi Huang and highly approved some Legalist methods. However, since the 1990s the related concept of the rule of law has gained currency.

Main Legalist scriptures

For most scripture that have been categorised into Legalist thought, the title is the name of a famous minister.

• The first is the Guanzi, referring to Guan Zhong who helped duke Huan of Qi (r. 685-643) to become the first hegemon of Chine.
• The Lizi, lost, refers to Li Kui, minister of the marquis Wen of Wei (r. 424-397)
• The Shenzi refers to Shen Buhai
• The Book of Prince Shang (Shangjun shu) is attributed to Shang Yang, minister of State of Qin
• The Shenzi (differs from above) is attributed to Shen Dao
• The Hanfeizi, written by Han Fei Zi synthesize Legalist thought.

Related figures

The Confucian thinker Xun Zi is sometime considered as being influenced by or having nourished Legalist ideas, mostly because two of his disciples (Li Si and Han Fei Zi) were strict Legalists.

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