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1. Fac et excusa. Seize the most favourable opportunity for arbitrary usurpation---either of the authority of the state over its own people or over a neighbouring people; the justification of the act and extenuation of the use of force will come much more easily and gracefully, when the deed is done, than if one has to think out convincing reasons for taking this step and first hear through all the objections which can be made against it. This is[p. 171] especially true in the first case mentioned, where the supreme power in the state also controls the legislature which we must obey without any reasoning about it. Besides, this show of audacity in a statesman even lends him a certain semblance of inward conviction of the justice of his action; and once he has got so far the god of success (bonus eventus) is his best advocate.

2. Si fecisti, nega. As for any crime you have committed, such as has, for instance, brought your people to despair and thence to insurrection, deny that it has happened owing to any fault of yours. Say rather that it is all caused by the insubordination of your subjects, or, in the case of your having usurped a neighbouring state, that human nature is to blame; for, if a man is not ready to use force and steal a march upon his neighbour, he may certainly count on the latter forestalling him and taking him prisoner.

3. Divide et impera. That is to say, if there are certain privileged persons, holding authority among the people, who have merely chosen you for their sovereign as primus inter pares, bring about a quarrel among them, and make mischief between them and the people. Now back up the people with a dazzling promise of greater freedom; everything will now depend unconditionally on your will. Or again, if there is a difficulty with[p. 172] foreign states, then to stir up dissension among them is a pretty sure means of subjecting first one and then the other to your sway, under the pretext of aiding the weaker.

It is true that now-a-days no body is taken in by these political maxims, for they are all familiar to everyone. Moreover, there is no need of being ashamed of them, as if their injustice were too patent. For the great Powers never feel shame before the judgment of the common herd, but only before one another; so that as far as this matter goes, it is not the revelation of these guiding principles of policy that can make rulers ashamed, but only the unsuccessful use of them. For as to the morality of these maxims, politicians are all agreed. Hence there is always left political prestige on which they can safely count; and this means the glory of increasing their power by any means that offer.[149]

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In all these twistings and turnings of an immoral doctrine of expediency which aims at substituting a state of peace for the warlike conditions in which men are placed by nature, so much at least is clear;---that men cannot get away from[p. 173] the idea of right in their private any more than in their public relations; and that they do not dare (this is indeed most strikingly seen in the concept of an international law) to base politics[p. 174] merely on the manipulations of expediency and therefore to refuse all obedience to the idea of a public right. On the contrary, they pay all fitting honour to the idea of right in itself, even although they should, at the same time, devise a hundred subterfuges and excuses to avoid it in practice, and should regard force, backed up by cunning, as having the authority which comes from being the source and unifying principle of all right. It will be well to put an end to this sophistry, if not to the injustice it extenuates, and to bring the false advocates of the mighty of the earth to confess that it is not right but might in whose interest they speak, and that it is the worship of might from which they take their cue, as if in this matter they had a right to command. In order to do this, we must first expose the delusion by which they deceive them[p. 175]selves and others; then discover the ultimate principle from which their plans for a perpetual peace proceed; and thence show that all the evil which stands in the way of the realisation of that ideal springs from the fact that the political moralist begins where the moral politician rightly ends and that, by subordinating principles to an end or putting the cart before the horse, he defeats his intention of bringing politics into harmony with morals.

In order to make practical philosophy consistent with itself, we must first decide the following question:---In dealing with the problems of practical reason must we begin from its material principle---the end as the object of free choice---or from its formal principle which is based merely on freedom in its external relation?---from which comes the following law:---"Act so that thou canst will that thy maxim should be a universal law, be the end of thy action what it will."[150]

Without doubt, the latter determining principle of action must stand first; for, as a principle of right, it carries unconditional necessity with it, whereas the former is obligatory only if we assume the empirical conditions of the end set before us,---that is to say, that it is an end capable of being[p. 176] practically realised. And if this end---as, for example, the end of perpetual peace---should be also a duty, this same duty must necessarily have been deduced from the formal principle governing the maxims which guide external action. Now the first principle is the principle of the political moralist; the problems of constitutional, international and cosmopolitan law are mere technical problems (problema technicum). The second or formal principle, on the other hand, as the principle of the moral politician who regards it as a moral problem (problema morale), differs widely from the other principle in its methods of bringing about perpetual peace, which we desire not only as a material good, but also as a state of things resulting from our recognition of the precepts of duty.[151]

To solve the first problem---that, namely, of political expediency---much knowledge of nature is required, that her mechanical laws may be employed for the end in view. And yet the result of all knowledge of this kind is uncertain, as far as perpetual peace is concerned. This we find to be so, whichever of the three departments of public law we take. It is uncertain whether a people could be better kept in obedience and at the same time prosperity by severity or by baits held out to their[p. 177] vanity; whether they would be better governed under the sovereignty of a single individual or by the authority of several acting together; whether the combined authority might be better secured merely, say, by an official nobility or by the power of the people within the state; and, finally, whether such conditions could be long maintained. There are examples to the contrary in history in the case of all forms of government, with the exception of the only true republican constitution, the idea of which can occur only to a moral politician. Still more uncertain is a law of nations, ostensibly established upon statutes devised by ministers; for this amounts in fact to mere empty words, and rests on treaties which, in the very act of ratification, contain a secret reservation of the right to violate them. On the other hand, the solution of the second problem---the problem of political wisdom---forces itself, we may say, upon us; it is quite obvious to every one, and puts all crooked dealings to shame; it leads, too, straight to the desired end, while at the same time, discretion warns us not to drag in the conditions of perpetual peace by force, but to take time and approach this ideal gradually as favourable circumstances permit.