
“Without slavery the rebellion could never have existed; without slavery it could not continue.”
1860s, Second State of the Union address (1862)
Speech https://books.google.com/books?id=qMEv8DNXVbIC&pg=PA293&dq=%22Pro-Slavery+Rebellion%22&hl=en&sa=X&ved=0ahUKEwjtq-fys9zSAhWM4yYKHUaWBNIQ6AEIMjAE#v=onepage&q=%22Pro-Slavery%20Rebellion%22&f=false (January 1862)
1860s
“Without slavery the rebellion could never have existed; without slavery it could not continue.”
1860s, Second State of the Union address (1862)
1990s, An Exchange With a Civil War Historian (June 1995)
Part II: The Banality of Slavery, page 50.
Going Postal: Rage, Murder, and Rebellion, From Reagan's Workplaces to Clinton's Columbine and Beyond (2005)
To Otto von Bismarck in June 1878, as quoted in Around the World with General Grant http://www.granthomepage.com/grantslavery.htm (1879), by John Russell Young, The American News Company, New York, vol. 7, p. 416.
1870s, Around the World with General Grant (1879)
Conclusion
1880s, Personal Memoirs of General U. S. Grant (1885)
Context: The cause of the great War of the Rebellion against the United States will have to be attributed to slavery. For some years before the war began it was a trite saying among some politicians that 'A state half slave and half free cannot exist.' All must become slave or all free, or the state will go down. I took no part myself in any such view of the case at the time, but since the war is over, reviewing the whole question, I have come to the conclusion that the saying is quite true.
“I have always hated slavery, I think as much as any Abolitionist.”
Speech https://cwcrossroads.wordpress.com/2011/01/18/race-and-slavery-north-and-south-some-logical-fallacies/#comment-47560 (10 July 1858)
1850s
Both American and British abolitionists assumed that an end to slave imports would lead automatically to the amelioration and gradual abolition of slavery.
The Problem of Slavery in the Age of Revolution, 1770-1823, page 129. https://books.google.com/books?id=9lsvDwAAQBAJ&pg=PA129
“I do not contradict him. But I reject slavery because I see no men fit to be masters.”
Equality (1943)
Context: I don't deserve a share in governing a hen-roost, much less a nation. Nor do most people — all the people who believe advertisements, and think in catchwords and spread rumors. The real reason for democracy is just the reverse. Mankind is so fallen that no man can be trusted with unchecked power over his fellows. Aristotle said that some people were only fit to be slaves. I do not contradict him. But I reject slavery because I see no men fit to be masters.
Letter to Samuel "Sam" Chapman (June 1907)
Context: I suppose you are now back in Staunton. I wrote you about my disgust at reading the Reunion speeches. It has since been increased by reading Christian's report. I am certainly glad I wasn't there. According to Christian, the Virginia people were the abolitionists and the Northern people were pro-slavery. He says slavery was 'a patriarchal' institution. So were polygamy and circumcision. Ask Hugh if he has been circumcised.