Condemnation of Offensive War (Fei Gong)

The Fei Gong triplet does not rest on a single premise but builds three separate cases, each aimed at a different audience or objection. Part I makes a moral argument: rulers who condemn a man for stealing a pig or a chicken yet celebrate the conquest of a state are guilty of a grotesque inconsistency, valuing small property over human life. Part II makes an economic argument: war destroys the seasons of agricultural labor, consumes resources in weapons and provisions, and leaves both victor and vanquished impoverished. Part III makes a religious argument: Heaven and the spirits punish aggressors, as the historical fates of defeated tyrants demonstrate. Scholars note that the existence of three arguments in one triplet reveals a living school debating how best to persuade different audiences .

No, and the distinction is crucial. Mozi condemns gong—offensive attack, aggression for gain—but not all use of force. Defensive warfare is explicitly legitimate: Mohist groups famously traveled to small states under attack and helped organize their defenses, putting their military engineering skills at the service of the victims of aggression . Mozi also permits punitive expeditions (zhu) against tyrants who harm their own people, though the criteria for distinguishing punishment from aggression are demanding. The Fei Gong chapters are therefore not a pacifist manifesto but a targeted critique of wars of conquest. This nuance matters because reading Mozi as a blanket pacifist obscures the practical, defensive dimension of Mohist military thought.

Jian'ai is the ethical foundation; Fei Gong is its most direct political consequence. If one truly regards other states as one's own, then attacking them is self-harm, not conquest. Mozi's moral argument in Fei Gong Part I depends on this premise: the ruler who celebrates the annexation of a neighboring state is like a thief who loves his own household and robs another's. The inconsistency Mozi exposes is not merely logical but ethical—it reveals a failure of inclusive care. The economic argument reinforces this by showing that war harms the very people a caring ruler is obligated to protect. Fei Gong is thus not a separate doctrine but the application of Jian'ai to the domain of interstate relations .

Both thinkers condemn wars of aggression, but their frameworks diverge sharply. Mencius permits only 'punitive expeditions' (zheng) ordered by a true king, and he was willing to reinterpret historical records to defend the Zhou conquest of Shang as a righteous war rather than an act of regicide. Mozi's Fei Gong III also invokes Heaven's support and describes the tyrant Zhou as a 'dissolute man,' but Mozi does not restrict legitimate force to a single royal authority in the way Mencius does. More importantly, Mencius's criterion for legitimate war is the moral character of the ruler and the mandate of Heaven; Mozi's criterion is the benefit or harm to the people, measured economically and morally. Yoshihiro Watanabe notes that as Zhou royal authority declined, Mencius's logic became unable to negate the wars conducted in the king's name, while Mohists continued to oppose aggression and defend small states in practice .

Fei Gong survives as a triplet—Parts I, II, and III (chapters 17–19 of the received Mozi)—following the pattern of competing versions circulating among different Mohist factions. Chris Fraser's textual analysis argues against A. C. Graham's hypothesis that Part I was originally a fragment appended to another chapter, showing that the differences between the parts reflect deliberate editorial choices rather than accidental textual corruption . The complete English translation is Ian Johnston's The Mozi: A Complete Translation, published in 2010 by the Chinese University Press and distributed by Columbia University Press. It is the first complete bilingual English edition of the entire Mozi and includes the full Fei Gong triplet with annotations . W. P. Mei's earlier translation (1929) also includes the triplet and remains accessible online.

The failure was practical rather than logical. A 2022 Chinese scholarly study notes that although Fei Gong was the political goal of Mozi's philosophy, it ultimately failed to achieve practical political significance because the Mohists could not translate their concern for the common people into a concern adopted by rulers . The Mohist response to this failure was not to abandon the argument but to supplement it with practical defense: Mohist groups traveled to states under attack and helped organize their defenses, putting their engineering and tactical knowledge at the service of the victims of aggression . The anti-war doctrine thus survived as a critique and a defensive practice, even as the broader political program of persuading rulers to renounce conquest proved impossible in the competitive interstate environment of the Warring States.