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Perpetual Peace: A Philosophical Essay

Immanuel Kant

So that _perpetual peace_, the final goal of international law as a whole, is really an impracticable idea [_eine unausführbare Idee_]. The political principles, however, which are directed towards this end, (that is to say, towards the establishment of such unions of states as may serve as a continual approximation to that ideal), are not impracticable; on the contrary, as this approximation is required by duty and is therefore founded also upon the rights of men and of states, these principles are, without doubt, capable of practical realization.” [Tr.] The attachment of savages to their lawless liberty, the fact that they would rather be at hopeless variance with one another than submit themselves to a legal authority constituted by themselves, that they therefore prefer their senseless freedom to a reason-governed liberty, is regarded by us with profound contempt as barbarism and uncivilisation and the brutal degradation of humanity. So one would think that civilised races, each formed into a state by itself, must come out of such an abandoned condition as soon as they possibly can. On the contrary, however, every state thinks rather that its majesty (the “majesty” of a people is an absurd expression) lies just in the very fact that it is subject to no external legal authority; and the glory of the ruler consists in this, that, without his requiring to expose himself to danger, thousands stand at his command ready to let themselves be sacrificed for a matter of no concern to them.[126] The difference between the savages of Europe and those of America lies chiefly in this, that, while many tribes of the latter have been entirely devoured by their enemies, Europeans know a better way of using the vanquished than by eating them; and they prefer to increase through them the number of their subjects, and so the number of instruments at their command for still more widely spread war. [126] A Greek Emperor who magnanimously volunteered to settle by a duel his quarrel with a Bulgarian Prince, got the following answer:—“A smith who has tongs will not pluck the glowing iron from the fire with his hands.” The depravity of human nature[127] shows itself without disguise in the unrestrained relations of nations to each other, while in the law-governed civil state much of this is hidden by the check of government. This being so, it is astonishing that the word “right” has not yet been entirely banished from the politics of war as pedantic, and that no state has yet ventured to publicly advocate this point of view. For Hugo Grotius, Puffendorf, Vattel and others—Job’s comforters, all of them—are always quoted in good faith to justify an attack, although their codes, whether couched in philosophical or diplomatic terms, have not—nor can have—the slightest legal force, because states, as such, are under no common external authority; and there is no instance of a state having ever been moved by argument to desist from its purpose, even when this was backed up by the testimony of such great men. This homage which every state renders—in words at least—to the idea of right, proves that, although it may be slumbering, there is, notwithstanding, to be found in man a still higher natural moral capacity by the aid of which he will in time gain the mastery over the evil principle in his nature, the existence of which he is unable to deny. And he hopes the same of others; for otherwise the word “right” would never be uttered by states who wish to wage war, unless to deride it like the Gallic Prince who declared:—“The privilege which nature gives the strong is that the weak must obey them.”[128] [127] “Both sayings are very true: that _man to man is a kind of God_; and that _man to man is an arrant wolf_. The first is true, if we compare citizens amongst themselves; and the second, if we compare cities. In the one, there is some analogy of similitude with the Deity; to wit, justice and charity, the twin sisters of peace. But in the other, good men must defend themselves by taking to them for a sanctuary the two daughters of war, deceit and violence: that is, in plain terms, a mere brutal rapacity.” (Hobbes: Epistle Dedicatory to the _Philosophical Rudiments concerning Government and Society_.) [Tr.] [128] “The strongest are still never sufficiently strong to ensure them the continual mastership, unless they find means of transforming force into right, and obedience into duty. From the right of the strongest, right takes an ironical appearance, and is rarely established as a principle.” (_Contrat Social_, I. Ch. III.) [Tr.] The method by which states prosecute their rights can never be by process of law—as it is where there is an external tribunal—but only by war. Through this means, however, and its favourable issue, victory, the question of right is never decided. A treaty of peace makes, it may be, an end to the war of the moment, but not to the conditions of war which at any time may afford a new pretext for opening hostilities; and this we cannot exactly condemn as unjust, because under these conditions everyone is his own judge. Notwithstanding, not quite the same rule applies to states according to the law of nations as holds good of individuals in a lawless condition according to the law of nature, namely, “that they ought to advance out of this condition.” This is so, because, as states, they have already within themselves a legal constitution, and have therefore advanced beyond the stage at which others, in accordance with their ideas of right, can force them to come under a wider legal constitution. Meanwhile, however, reason, from her throne of the supreme law-giving moral power, absolutely condemns war[129] as a morally lawful proceeding, and makes a state of peace, on the other hand, an immediate duty. Without a compact between the nations, however, this state of peace cannot be established or assured. Hence there must be an alliance of a particular kind which we may call a covenant of peace (_foedus pacificum_), which would differ from a treaty of peace (_pactum pacis_) in this respect, that the latter merely puts an end to one war, while the former would seek to put an end to war for ever. This alliance does not aim at the gain of any power whatsoever of the state, but merely at the preservation and security of the freedom of the state for itself and of other allied states at the same time.[130] The latter do not, however, require, for this reason, to submit themselves like individuals in the state of nature to public laws and coercion. The practicability or objective reality of this idea of federation which is to extend gradually over all states and so lead to perpetual peace can be shewn. For, if Fortune ordains that a powerful and enlightened people should form a republic,—which by its very nature is inclined to perpetual peace—this would serve as a centre of federal union for other states wishing to join, and thus secure conditions of freedom among the states in accordance with the idea of the law of nations. Gradually, through different unions of this kind, the federation would extend further and further. [129] “The natural state,” says Hobbes, (_On Dominion_, Ch. VII. § 18) “hath the same proportion to the civil, (I mean, liberty to subjection), which passion hath to reason, or a beast to a man.” Locke speaks thus of man, when he puts himself into the state of war with another:—“having quitted reason, which God hath given to be the rule betwixt man and man, and the common bond whereby human kind is united into one fellowship and society; and having renounced the way of peace which that teaches, and made use of the force of war, to compass his unjust ends upon another, where he has no right; and so revolting from his own kind to that of beasts, by making force, which is theirs, to be his rule of right, he renders himself liable to be destroyed by the injured person, and the rest of mankind that will join with him in the execution of justice, as any other wild beast, or noxious brute, with whom mankind can have neither society nor security.” (_Civil Government_, Ch. XV. § 172.) [Tr.] [130] Cf. Rousseau: _Gouvernement de Pologne_, Ch. V. Federate government is “the only one which unites in itself all the advantages of great and small states.” [Tr.] It is quite comprehensible that a people should say:—“There shall be no war among us, for we shall form ourselves into a state, that is to say, constitute for ourselves a supreme legislative, administrative and judicial power which will settle our disputes peaceably.” But if this state says:—“There shall be no war between me and other states, although I recognise no supreme law-giving power which will secure me my rights and whose rights I will guarantee;” then it is not at all clear upon what grounds I could base my confidence in my right, unless it were the substitute for that compact on which civil society is based—namely, free federation which reason must necessarily connect with the idea of the law of nations, if indeed any meaning is to be left in that concept at all. There is no intelligible meaning in the idea of the law of nations as giving a right to make war; for that must be a right to decide what is just, not in accordance with universal, external laws limiting the freedom of each individual, but by means of one-sided maxims applied by force. We must then understand by this that men of such ways of thinking are quite justly served, when they destroy one another, and thus find perpetual peace in the wide grave which covers all the abominations of acts of violence as well as the authors of such deeds. For states, in their relation to one another, there can be, according to reason, no other way of advancing from that lawless condition which unceasing war implies, than by giving up their savage lawless freedom, just as individual men have done, and yielding to the coercion of public laws. Thus they can form a State of nations (_civitas gentium_), one, too, which will be ever increasing and would finally embrace all the peoples of the earth. States, however, in accordance with their understanding of the law of nations, by no means desire this, and therefore reject _in hypothesi_ what is correct _in thesi_. Hence, instead of the positive idea of a world-republic, if all is not to be lost, only the negative substitute for it, a federation averting war, maintaining its ground and ever extending over the world may stop the current of this tendency to war and shrinking from the control of law. But even then there will be a constant danger that this propensity may break out.[131] “Furor impius intus—fremit horridus ore cruento.” (Virgil.)[132] [131] On the conclusion of peace at the end of a war, it might not be unseemly for a nation to appoint a day of humiliation, after the festival of thanksgiving, on which to invoke the mercy of Heaven for the terrible sin which the human race are guilty of, in their continued unwillingness to submit (in their relations with other states) to a law-governed constitution, preferring rather in the pride of their independence to use the barbarous method of war, which after all does not really settle what is wanted, namely, the right of each state in a quarrel. The feasts of thanksgiving during a war for a victorious battle, the hymns which are sung—to use the Jewish expression—“to the Lord of Hosts” are not in less strong contrast to the ethical idea of a father of mankind; for, apart from the indifference these customs show to the way in which nations seek to establish their rights—sad enough as it is—these rejoicings bring in an element