A rival to the Confucians
Mozi, whose name means “Master Mo,” is traditionally placed in the fifth century BCE, soon after Confucius. Little is securely known about his life, and the book that carries his name, the Mozi, was put together by his followers over time. In the Warring States period, he and his school were counted as one of the two most prominent rivals of the Confucians, and the contrast between them is a good way to see how varied early thought was, as outlined in the survey of the Hundred Schools.
The core idea: impartial care
The best-known Mohist doctrine is usually translated as impartial care, universal love or concern for all (jian ai). The argument starts from a practical observation. Much of the disorder of the time, Mozi suggested, came from people favoring themselves, their own family, or their own state over others. Rulers attacked neighboring states, officials plotted against one another, and families quarreled, all because concern stopped at an arbitrary boundary.
His proposed remedy was to extend care without such gradations, so that others’ interests count as one’s own. It is important not to read this as a call for warm feeling. In the Mohist texts, the point is mainly practical conduct: acting to benefit others and avoiding harm.
Confucian critics, including Mencius, objected that treating strangers like kin ignored the natural priority of family ties and was therefore unrealistic or even harmful. Mohists replied that the supposed conflict was exaggerated: caring about everyone does not mean neglecting one’s parents. This disagreement is still discussed in comparisons of Chinese and other ethical traditions.
Benefit as a test
Mohist argument often rests on what benefits the people, usually summed up as bringing wealth, increasing the population, and securing order. Customs and policies were judged by their results. This gave the school a notably practical tone. The texts list “three standards” for judging a claim: its roots in the example of the early sages, its fit with what people actually experience, and its usefulness when applied to government.
Against aggressive war
Mohists condemned offensive war as organized killing and waste, however it was described. According to the texts, they also practiced what they preached: the school is associated with expertise in defending cities, and the later chapters of the Mozi contain material on fortifications and defensive tactics. Their stance was not pacifism in the full sense, since defense was accepted.
Frugality and the critique of ritual
Another theme is thrift. Mozi criticized elaborate funerals, long mourning periods, and expensive music, arguing that they drained resources and kept people from productive work. This was a direct challenge to Confucian values, which gave great weight to ritual and to mourning for parents. A reader can compare it with the Confucian position in the article on ritual propriety, and with practices still discussed under mourning customs.
The Mohists did not reject all customs, and they still spoke of Heaven as a moral force that favors righteousness. Their quarrel was with display and extravagance, not with reverence as such.
Logic and argument
Later chapters, sometimes called the Mohist canons, deal with definitions, reasoning, optics, and mechanics. They are among the most technical writings of the period, which is why historians of science and logic take an interest. The material is difficult and survives in poor condition, so some interpretations are uncertain.
Why the school faded
After the Warring States, Mohism largely disappeared as an organized movement. Historians suggest several reasons, none certain. Its demands ran against the interests of rulers who valued military power and ceremony. Its strict discipline may have been hard to maintain. And during the Han dynasty, state learning settled on other traditions. Parts of its outlook, such as concern for the common people’s welfare, can still be heard in later writing, and the Mozi was rediscovered by scholars in later centuries.
Mohism is worth reading not because it won, but because it shows how early thinkers pushed on questions that remain open: how far our concern should reach, and how a community should balance tradition against practical benefit.