
1860s, Should the Negro Enlist in the Union Army? (1863)
John Brown and the Principle of Nonresistance http://teachingamericanhistory.org/library/index.asp?document=569 (16 December 1859)
Context: We have a natural right, therefore, to seek the abolition of slavery throughout the globe. It is our special duty to make Massachusetts free soil, so that the moment the fugitive slave stands upon it, he shall take his place in the ranks of the free. God commands us to "hide the outcast, and bewray not him that wandereth." I say, LET THE WILL OF GOD BE DONE! That is "the head and front" of my "fanaticism"! That is the extent of my "infidelity"! That comprehends all of my "treason"! THE WILL OF GOD BE DONE!
1860s, Should the Negro Enlist in the Union Army? (1863)
1870s, Third State of the Union Address (1871)
Context: It is a subject for congratulation that the great Empire of Brazil has taken the initiatory step toward the abolition of slavery. Our relations with that Empire, always cordial, will naturally be made more so by this act. It is not too much to hope that the Government of Brazil may hereafter find it for its interest, as well as intrinsically right, to advance toward entire emancipation more rapidly than the present act contemplates.
1860s, The Constitution of the United States: Is It Pro-Slavery or Anti-Slavery? (1860)
Context: I, on the other hand, deny that the Constitution guarantees the right to hold property in man, and believe that the way to abolish slavery in America is to vote such men into power as well use their powers for the abolition of slavery. This is the issue plainly stated, and you shall judge between us.
A Summary View of the Rights of British America http://alexpeak.com/twr/jefferson/#1784 (July 1774)
1770s
Context: For the most trifling reasons, and sometimes for no conceivable reason at all, his majesty has rejected laws of the most salutary tendency. The abolition of domestic slavery is the great object of desire in those colonies where it was unhappily introduced in their infant state. But previous to the infranchisement of the slaves we have, it is necessary to exclude all further importations from Africa. Yet our repeated attempts to effect this by prohibitions, and by imposing duties which might amount to a prohibition, have been hitherto defeated by his majesty’s negative: thus preferring the immediate advantages of a few British corsairs to the lasting interests of the American states, and to the rights of human nature deeply wounded by this infamous practice.
Source: What is Property? (1840), Ch. I: "Method Pursued in this Work. The Idea of a Revolution"
Letter to Robert Morris https://web.archive.org/web/20060503040039/http://gwpapers.virginia.edu/project/volumes/confederation/essay4.html (12 April 1786)
1780s
Lord George Bentinck: A Political Biography (1852), pp. 324-325.
1850s
1870s, Fourth State of the Union Address (1872)
Source: " The Unconscious Holocaust https://archive.org/details/theunconsciousholocaust-jhowardmoore", Good Health: A Journal of Hygiene, Vol 32, Iss. 2, 1 Feb. 1897, p. 75