Intervention may be between two or more nations, or between the two parties to a civil war; and yet again, it may be where there is no war, foreign or domestic. In each case it is governed by the same principles, except, perhaps, that in the case of civil war there should be more careful consideration, not only of the rights, but of the susceptibilities of a nation so severely tried. Such is the obvious suggestion of humanity. Intervention between nations is only a common form of participation in foreign war, but intervention in a civil war is intermeddling in the domestic concerns of another nation. Whoever acts at the _joint invitation_ of belligerent parties to compose a bloody strife is entitled to the blessings which belong to the peacemakers; but, if uninvited, or acting at the invitation of one party only, he will be careful to proceed with reserve and tenderness, in the spirit of peace, and confining action to a proffer of good offices in the form of mediation or intercession, unless he is ready for war. Such proffer may be declined without offence. But it can never be forgotten, that, _where one side is obviously fighting for Barbarism_, any intervention, whatever form it takes,--if only by captious criticism, calculated to encourage the wrong side, or to secure for it time or temporary toleration, if not final success,--_is plainly immoral_. If not contrary to the Law of Nations, it ought to be. Intervention in the spirit of peace and for the sake of peace belongs to the refinements of modern civilization. Intervention in the spirit of war, if not for the sake of war, has filled a large space in history, ancient and modern. But all these instances may be grouped under two heads: first, intervention in _external_ affairs; and, secondly, intervention in _internal_ affairs. The first is illustrated by the intervention of the Elector Maurice of Saxony against Charles the Fifth, of King William against Louis the Fourteenth, of Russia and France in the Seven Years’ War, of Russia again between France and Austria in 1805, and also between France and Prussia in 1806, and of France, Great Britain, and Sardinia between Turkey and Russia in the war of the Crimea. The intervention of Russia, Austria, and Prussia in the affairs of Poland, of Great Britain among the native provinces of India, and of the Allied Powers in the French Revolution, under the continued inspiration of the Treaty of Pilnitz, are illustrations of the second head. Without dwelling on these great examples, I shall call attention to instances showing more especially the growth of intervention, first in external, and then in internal affairs. Here I shall conceal nothing. Instances seeming against the principles I have at heart will at least help illustrate the great subject, so that you may see it as it is. * * * * *