China's harshest school of statecraft may never have been a school
Legalism helped the state of Qin conquer its rivals and found China's first imperial dynasty, then took the blame for Qin's cruelty. Yet the label was invented afterwards by Han-era cataloguers, and the thinkers grouped under it cared as much about administration and a hands-off ruler as about punishment.
The ideas grew from chaos. After the Eastern Zhou dynasty began in 770 BCE, royal authority eroded until, by the early 5th century, the Zhou king was little more than a figurehead and rival states fought for survival. Rulers wanted advisers who could make them stronger, and the resulting ferment is remembered as the Hundred Schools of Thought. Confucians argued that a virtuous king would spread virtue downward; Mohists wanted officials chosen for ability and money diverted from music and ritual.
The thinkers later called Legalists took a colder view. They saw people, or at least elites, as self-interested, and favoured equal treatment under law, clear regulations, farming and military strength, and merit over aristocratic birth. Shang Yang's reforms in Qin in the 4th century BCE rewarded soldiers with land according to performance and penalised farmers who missed quotas, measures that underpinned Qin's eventual unification of China. Han Fei, often ranked the greatest of the group, borrowed the Daoist ideal of non-action to picture a ruler who sets universal standards and then steps back.
The name itself is a historian's construct. Sima Tan, who lived from 165 to 110 BCE, coined Fajia, the fa school, in an essay surveying six styles of government. He praised it for clearly dividing offices and treating everyone alike regardless of kinship, but judged it too strict to last. The librarian Liu Xiang then used it as a shelf category. Many modern scholars consider the label misleading, since several of these figures focused on organisation rather than law.
Shen Dao, for instance, preferred proportionate rewards and punishments to extreme ones, and Shen Buhai reportedly favoured supervisory technique over penalties. The blend of Legalist and Daoist thought known as Huang-Lao dominated the early Han court. Later dynasties publicly embraced Confucianism and distanced themselves from Qin's reputation for brutality, but the bureaucratic machinery Qin built was kept by the Han and shaped Chinese government for centuries.
Source: Legalism (Chinese philosophy)