While this consummation necessarily enters into the present purposes of the Republican party, while we naturally begin by insisting upon purity in the Government, and make this one of our urgent demands, it is obvious that the quickening impulse of the party is to be found in other purposes, which cannot pass away in a single election. The Republican party seeks to overthrow the Slave Oligarchy in the National Government, and especially at this moment to stay its aggressions in the Territories, which, through a corrupt interpretation of the Constitution, it threatens to barbarize with Slavery. But all who seek purity in the National Government must unite in this purpose; for only by the overthrow of this base Oligarchy, which, beginning in the denial of all human rights, necessarily shows itself in barbarism and villany of all kinds, can a better order prevail. It is out of Slavery that all our griefs proceed; nor can the offences of the present Administration be fully comprehended without considering the nature of this Evil, and its chronic influence over our Government, reaching everywhere by subtle agencies, or more subtle, far-reaching example, but still in itself the original and all-sufficient activity. As well attempt to explain the Gulf Stream without the Gulf of Mexico, or the Origin of Evil without the human heart, as attempt to explain the present degraded character of the National Government without Slavery. As well attempt the play of “Othello” without the Moor. And permit me to say that our warfare with these iniquities will be feeble, unless we attack them in their origin. * * * * * At the beginning of our history Slavery was universally admitted to be an Evil. Nobody then so hardy as to vindicate it. In the Convention which framed the Constitution it was branded as “a nefarious institution,” or more mildly called “wrong”; and these generous voices came from the South as well as from the North. Out of the Convention there was a similar accord. I shall not quote the words of Washington, Jefferson, Franklin, or Jay, for they are familiar to all. Even as they spoke others spoke, and I might occupy the whole evening simply reciting this testimony. Nor were these declarations confined to public life. The Colleges all, by definite action, arrayed themselves against Slavery, especially the University of William and Mary, in Virginia, which conferred upon Granville Sharp, the acknowledged chief of British Abolitionists, the honorary degree of Doctor of Laws. The Literature of the land, such as it was, agreed with the Colleges. The Church, too, added its powerful voice; and here, amid diversities of religious faith, we hail that unity of spirit which animated all. Quakers, Methodists, Presbyterians, and Congregationalists seemed to vie with each other in this pious testimony.