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[p. 157]3. As nature wisely separates nations which the will of each state, sanctioned even by the principles of international law, would gladly unite under its own sway by stratagem or force; in the same way, on the other hand, she unites nations whom the principle of a cosmopolitan right would not have secured against violence and war. And this union she brings about through an appeal to their mutual interests. The commercial spirit cannot co-exist with war, and sooner or later it takes possession of every nation. For, of all the forces which lie at the command of a state, the power of money is probably the most reliable. Hence states find themselves compelled---not, it is true, exactly from motives of morality---to further the noble end of peace and to avert war, by means of mediation, wherever it threatens to break out, just as if they had made a permanent league for this purpose. For great alliances with a view to war can, from the nature of things, only very rarely occur, and still more seldom succeed.
In this way nature guarantees the coming of perpetual peace, through the natural course of human propensities: not indeed with sufficient certainty to enable us to prophesy the future of this ideal theoretically, but yet clearly enough for practical purposes. And thus this guarantee of nature makes it a duty that we should labour for this end, an end which is no mere chimera.
[p. 158]
A SECRET ARTICLE FOR PERPETUAL PEACE
A secret article in negotiations concerning public right is, when looked at objectively or with regard to the meaning of the term, a contradiction. When we view it, however, from the subjective standpoint, with regard to the character and condition of the person who dictates it, we see that it might quite well involve some private consideration, so that he would regard it as hazardous to his dignity to acknowledge such an article as originating from him.
The only article of this kind is contained in the following proposition:---"The opinions of philosophers, with regard to the conditions of the possibility of a public peace, shall be taken into consideration by states armed for war."
It seems, however, to be derogatory to the dignity of the legislative authority of a state---to which we must of course attribute all wisdom---to ask advice from subjects (among whom stand philosophers) about the rules of its behaviour to other states. At the same time, it is very advisable that this should be done. Hence the state will silently invite suggestion for this purpose, while at the same time keeping the fact secret. This amounts to[p. 159] saying that the state will allow philosophers to discuss freely and publicly the universal principles governing the conduct of war and establishment of peace; for they will do this of their own accord, if no prohibition is laid upon them.[145] The arrangement between states, on this point, does not require that a special agreement should be made, merely for this purpose; for it is already involved in the obligation imposed by the universal reason of man which gives the moral law. We would not be understood to say that the state must give a preference to the principles of the philosopher, rather than to the opinions of the jurist, the representative of state authority; but only that he should be heard. The latter, who has chosen for a symbol the scales of right and the sword of justice,[146] generally uses that sword not merely to keep off all outside influences from the scales; for, when one pan of the balance will not go down, he throws his sword into it; and then V victis! The jurist, not being[p. 160] a moral philosopher, is under the greatest temptation to do this, because it is his business only to apply existing laws and not to investigate whether these are not themselves in need of improvement; and this actually lower function of his profession he looks upon as the nobler, because it is linked to power (as is the case also in both the other faculties, theology and medicine). Philosophy occupies a very low position compared with this combined power. So that it is said, for example, that she is the handmaid of theology; and the same has been said of her position with regard to law and medicine. It is not quite clear, however, "whether she bears the torch before these gracious ladies, or carries the train."
That kings should philosophise, or philosophers become kings, is not to be expected. But neither is it to be desired; for the possession of power is inevitably fatal to the free exercise of reason. But it is absolutely indispensable, for their enlightenment as to the full significance of their vocations, that both kings and sovereign nations, which rule themselves in accordance with laws of equality, should not allow the class of philosophers to disappear, nor forbid the expression of their opinions, but should allow them to speak openly. And since this class of men, by their very nature, are incapable of instigating rebellion or forming unions for purposes of political agitation, they should not be suspected of propagandism.
[p. 161]
ON THE DISAGREEMENT BETWEEN MORALS AND POLITICS WITH REFERENCE TO PERPETUAL PEACE
In an objective sense, morals is a practical science, as the sum of laws exacting unconditional obedience, in accordance with which we ought to act. Now, once we have admitted the authority of this idea of duty, it is evidently inconsistent that we should think of saying that we cannot act thus. For, in this case, the idea of duty falls to the ground of itself; "ultra posse nemo obligatur." Hence there can be no quarrel between politics, as the practical science of right, and morals, which is also a science of right, but theoretical. That is, theory cannot come into conflict with practice. For, in that case, we would need to understand under the term "ethics" or "morals" a universal doctrine of expediency, or, in other words, a theory of precepts which may guide us in choosing the best means for attaining ends calculated for our advantage. This is to deny that a science of morals exists.
[p. 162]
Politics says, "Be wise as serpents"; morals adds the limiting condition, "and guileless as doves." If these precepts cannot stand together in one command, then there is a real quarrel between politics and morals.[147] But if they can be completely brought into accord, then the idea of any antagonism between them is absurd, and the question of how best to make a compromise between the two points of view ceases to be even raised. Although the saying, "Honesty is the best policy,[p. 163]" expresses a theory which, alas, is often contradicted in practice, yet the likewise theoretical maxim, "Honesty is better than any policy," is exalted high above every possible objection, is indeed the necessary condition of all politics.
The Terminus of morals does not yield to Jupiter, the Terminus of force; for the latter remains beneath the sway of Fate. In other words, reason is not sufficiently enlightened to survey the series of predetermining causes which would make it possible for us to predict with certainty the good or bad results of human action, as they follow from the mechanical laws of nature; although we may hope that things will turn out as we should desire. But what we have to do, in order to remain in the path of duty guided by the rules of wisdom, reason makes everywhere perfectly clear, and does this for the purpose of furthering her ultimate ends.