“I have always hated slavery, I think as much as any Abolitionist.”

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

Which are you in relation to a corporate aristocracy that has corrupted our govt and eroded our democracy?
Twitter https://twitter.com/marwilliamson (24 Dec 2019)
Williamson's quotes in social media

Speech to the Virginia Convention (1861)
Context: In the first place, I say that the North hates slavery, and, in using that expression I speak wittingly. In saying that the Black Republican party of the North hates slavery, I speak intentionally. If there is a doubt upon that question in the mind of any one who listens to me, a few of the multitude of proofs which could fill this room, would, I think, be sufficient to satisfy him. I beg to refer to a few of the proofs that are so abundant; and the first that I shall adduce consists in two extracts from a speech of Lincoln's, made in October 1858. They are as follows: 'I have always hated slavery as much as any abolitionist; I have always been an old line Whig; I have always hated it and I always believed it in the course of ultimate extinction, and if I were in Congress and a vote should come up on the question, whether slavery should be excluded from the territory, in spite of the Dred Scott decision, I would vote that it should.

Conductors by John L. Holmes (1988) pp 256-261 ISBN 0-575-04088-2

Statement quoted in Prophet Singer: The Voice And Vision of Woody Guthrie (2007) by Mark Allan Jackson. There are a few slight variants of this statement, which seems to have originated in a performance monologue.
Context: I hate a song that makes you think that you are not any good. I hate a song that makes you think that you are just born to lose. Bound to lose. No good to nobody. No good for nothing. Because you are too old or too young or too fat or too slim too ugly or too this or too that. Songs that run you down or poke fun at you on account of your bad luck or hard traveling. … I am out to fight those songs to my very last breath of air and my last drop of blood.
I am out to sing songs that will prove to you that this is your world and that if it has hit you pretty hard and knocked you for a dozen loops, no matter what color, what size you are, how you are built, I am out to sing the songs that make you take pride in yourself and in your work.
And the songs that I sing are made up for the most part by all sorts of folks just about like you. I could hire out to the other side, the big money side, and get several dollars every week just to quit singing my own kind of songs and to sing the kind that knock you down still farther and the ones that poke fun at you even more and the ones that make you think you've not any sense at all. But I decided a long time ago that I'd starve to death before I'd sing any such songs as that. The radio waves and your movies and your jukeboxes and your songbooks are already loaded down and running over with such no good songs as that anyhow.

Source: The Joy Luck Club (1989), Ch. 14, pg. 247

Quoted in "Jacques Barzun '27: Columbia Avatar" http://www.college.columbia.edu/cct/jan06/cover.php by Thomas Vinciguerra, Columbia Today (January 2006)

Anecdote recorded as something that Lincoln said in a conversation with educator Newman Bateman in the Autumn of 1860, in Life of Abraham Lincoln (1866) by Josiah Gilbert Holland, Chapter XVI, p. 287<!-- University of Nebraska Press -->
Posthumous attributions
Context: I know there is a God, and that He hates injustice and slavery. I see the storm coming, and I know that His hand is in it. If He has a place and work for me — and I think He has — I believe I am ready. I am nothing, but truth is everything. I know I am right because I know that liberty is right, for Christ teaches it, and Christ is God.
Context: I know there is a God, and that He hates injustice and slavery. I see the storm coming, and I know that His hand is in it. If He has a place and work for me — and I think He has — I believe I am ready. I am nothing, but truth is everything. I know I am right because I know that liberty is right, for Christ teaches it, and Christ is God. I have told them that a house divided against itself cannot stand, and Christ and reason say the same; and they will find it so. Douglas doesn't care whether slavery is voted up or voted down, but God cares, and humanity cares, and I care; and with God’s help I shall not fail. I may not see the end; but it will come and I shall be vindicated; and these men will find that they have not read their Bibles aright.