Christendom. There is, besides, a distinct and separate cause of war, more fatal to the possibilities of peace in Europe than open injustice; and this cause being certainly in the hands of nations to deal with as they please, there is a tolerable certainty that a congress _sincerely_ pacific would cut it up by the roots. It is a cause noticed by Kant in his Essay on Perpetual Peace, and with great sagacity, though otherwise that little work is not free from visionary self-delusions: and this cause lies in the diplomacy of Europe. Treaties of peace are so constructed, as almost always to sow the seeds of future wars. This seems to the inexperienced reader a matter of carelessness or laxity in the choice of expression; and sometimes it may have been so; but more often it has been done under the secret dictation of powerful courts-- making peaces only as truces, anxious only for time to nurse their energies, and to keep open some plausible call for war. This is not only amongst the most extensive causes of war, but the very worst: because it gives a colorable air of justice, and almost of necessity to a war, which is, in fact, the most outrageously unjust, as being derived from a pretext silently prepared in former years, with mere subtlety of malice: it is a war growing out of occasions, forged beforehand, lest no occasions should spontaneously arise. Now, this cause of war could and would be healed by a congress, and through an easy reform in European diplomacy.[Footnote: One great _nidus_ of this insidious preparation for war under the very masque of peace, which Kant, from brevity, has failed to particularize, lies in the neglecting to make any provision for cases that are likely enough to arise. A, B, C, D, are all equally possible, but the treaty provides a specific course of action only for A, suppose. Then upon B or C arising, the high contracting parties, though desperately and equally pacific, find themselves committed to war actually by a treaty of lasting peace. Their pacific majesties sigh, and say--Alas! that it should be so, but really fight we must, for what says the treaty?] It is the strongest confirmation of the power inherent in growing civilization, to amend war, and to narrow the field of war, if we look back for the records of the changes in this direction which have already arisen in generations before our own.