It is unquestionably true, although it be upon false issues, that the sympathies of the civilized world are united against us. The name of slavery is hateful to the ears of freemen and of those who desire to be free. The wise and just subordination of an inferior to a superior race, is rashly confounded with the old systems of oppression and tyranny, which stain the pages of history and have excited the righteous indignation of the world. We are supposed to have proved recreant to the great principles and examples of the liberators of mankind. It is almost impossible at present to disabuse the public mind of Europe and of the North of this shallow prejudice. In the meantime, whilst carrying out the designs of Providence in relation to the negro race, we must rest for a while under a cloud of obloquy and abuse. Let us be faithful to our sublime trust, and future ages will appreciate the grandeur and glory of our mission. The pro-slavery sentiment is of recent development. It is more recent than any of the great inventions which have created the distinctive forms of our modern civilization. It is more recent than many of the great innovations of thought which now agitate mankind. The great and good fathers of our Republic unquestionably entertained anti-slavery sentiments or predilections, and the flippant Abolitionist thinks he has silenced us forever by quoting the opinions of Washington and Jefferson and Madison on this subject. The anti-slavery sentiment of that era was partly derived from the radical influence of the French revolution, the mad frenzies of which fearful convulsion, the fanatics of the North may yet repeat in the Western hemisphere. It was partially also deduced from narrow, uncertain and sometimes false premises. The lapse of time has secured us a better stand-point. Africa has been explored and the African studied, anatomically, socially, morally, ethnologically and historically. Not only the physical science of man but the philosophy of history itself has been almost created since the days of the revolution. The question of slavery has been thoroughly sifted. The metaphysical and theological as well as the political bearings of the subject have been closely scrutinized. Liberia is before us with its feeble and precarious existence, with its little torch of civilization nearly extinguished by the foul atmosphere of surrounding heathenism. St. Domingo is before us with its bloody teachings, and Jamaica with its silent monitors of pauperism and decay. The meagre slave population of the last century has increased to four millions. Cotton and sugar have risen to an unparalleled political and industrial importance, so that the whole civilized world is deeply interested in its maintenance of African slavery. And lastly, though not leastly, the free negro settlements in the North and in Canada are social experiments for our analysis and instruction.