Perpetual Peace. Immanuel Kant

      This is the point of view of the Idea for a Universal History. But equally, we may say, law and justice will reign between nations, when a legally and morally perfect constitution adorns the state. External perpetual peace presupposes internal peace—peace civil, social, economic, religious. Now, when men are perfect—and what would this be but perfection—how can there be war? Cardinal Fleury’s only objection—no light one—to St. Pierre’s project was that, as even the most peace-loving could not avoid war, all men must first be men of noble character. This seems to be what is required in the treatise on Perpetual Peace. Kant demands, to a certain extent, the moral regeneration of man. There must be perfect honesty in international dealings, good faith in the interpretation and fulfilment of treaties and so on (Art. 1)[55]: and again, every state must have a republican constitution—a term by which Kant understands a constitution as nearly as possible in accordance with the spirit of right. (Art. 1.)[56] This is to say that we have to start with our reformation at home, look first to the culture and education and morals of our citizens, then to our foreign relations. This is a question of self-interest as well as of ethics. On the civil and religious liberty of a state depends its commercial success. Kant saw the day coming, when industrial superiority was to be identified with political pre-eminence. The state which does not look to the enlightenment and liberty of its subjects must fail in the race. But the advantages of a high state of civilisation are not all negative. The more highly developed the individuals who form a state, the more highly developed is its consciousness of its obligations to other nations. In the ignorance and barbarism of races lies the great obstacle to a reign of law among states. Uncivilised states cannot be conceived as members of a federation of Europe. First, the perfect civil constitution according to right: then the federation of these law-abiding Powers. This is the path which reason marks out. The treatise on Perpetual Peace seems to be in this respect more practical than the Idea for a Universal History. But it matters little which way we take it. The point of view is the same in both cases: the end remains the development of man towards good, the order of his steps in this direction is indifferent.

      The Political and Social Conditions of Kant’s Time.

      The history of the human race, viewed as a whole, Kant regards as the realisation of a hidden plan of nature to bring about a political constitution internally and externally perfect—the only condition under which the faculties of man can be fully developed. Does experience support this theory? Kant thought that, to a certain degree, it did. This conviction was not, however, a fruit of his experience of citizenship in Prussia, an absolute dynastic state, a military monarchy waging perpetual dynastic wars of the kind he most hotly condemned. Kant had no feeling of love to Prussia,[57] and little of a citizen’s patriotic pride, or even interest, in its political achievements. This was partly because of his sympathy with republican doctrines: partly due to his love of justice and peculiar hatred of war,[58] a hatred based, no doubt, not less on principle than on a close personal experience of the wretchedness it brings with it. It was not the political and social conditions in which he lived which fostered Kant’s love of liberty and gave him inspiration, unless in the sense in which the mind reacts upon surrounding influences. Looking beyond Prussia to America, in whose struggle for independence he took a keen interest, and looking to France where the old dynastic monarchy had been succeeded by a republican state, Kant seemed to see the signs of a coming democratisation of the old monarchical society of Europe. In this growing influence on the state of the mass of the people who had everything to lose in war and little to gain by victory, he saw the guarantee of a future perpetual peace. Other forces too were at work to bring about this consummation. There was a growing consciousness that war, this costly means of settling a dispute, is not even a satisfactory method of settlement. Hazardous and destructive in its effect, it is also uncertain in its results. Victory is not always gain; it no longer signifies a land to be plundered, a people to be sold to slavery. It brings fresh responsibilities to a nation, at a time when it is not always strong enough to bear them. But, above all, Kant saw, even at the end of the eighteenth century, the nations of Europe so closely bound together by commercial interests that a war—and especially a maritime war where the scene of conflict cannot be to the same extent localised as on land—between any two of them could not but seriously affect the prosperity of the others.[59] He clearly realised that the spirit of commerce was the strongest force in the service of the maintenance of peace, and that in it lay a guarantee of future union.

      This scheme of a federation of the nations of the world, in accordance with principles which would put an end to war between them, was one whose interest for Kant seemed to increase during the last twenty years of his life.[60] It was according to him an idea of reason, and, in his first essay on the subject—that of 1784—we see the place this ideal of a perpetual peace held in the Kantian system of philosophy. Its realisation is the realisation of the highest good—the ethical and political summum bonum, for here the aims of morals and politics coincide: only in a perfect development of his faculties in culture and in morals can man at last find true happiness. History is working towards the consummation of this end. A moral obligation lies on man to strive to establish conditions which bring its realisation nearer. It is the duty of statesmen to form a federative union as it was formerly the duty of individuals to enter the state. The moral law points the way here as clearly as in the sphere of pure ethics:—“Thou can’st, therefore thou ought’st.”

      

      Let us be under no misapprehension as to Kant’s attitude to the problem of perpetual peace. It is an ideal. He states plainly that he so regards it[61] and that as such it is unattainable. But this is the essence of all ideals: they have not the less value in shaping the life and character of men and nations on that account. They are not ends to be realised but ideas according to which we must live, regulative principles. We cannot, says Kant, shape our life better than in acting as if such ideas of reason have objective validity and there be an immortal life in which man shall live according to the laws of reason, in peace with his neighbour and in freedom from the trammels of sense.

      Hence we are concerned here, not with an end, but with the means by which we might best set about attaining it, if it were attainable. This is the subject matter of the Treatise on Perpetual Peace (1795), a less eloquent and less purely philosophical essay than that of 1784, but throughout more systematic and practical. We have to do, not with the favourite dream of philanthropists like St. Pierre and Rousseau, but with a statement of the conditions on the fulfilment of which the transition to a reign of peace and law depends.