“Now, what about this negro equality of which we hear so much, in and out of Congress? It is claimed by the Democrats of today, that Jefferson has uttered an untruth in the declaration of principles which underlie our government. I still abide by the democracy of Jefferson, and avow my belief that all men are created equal. Equal how? Not in physical strength, not in symmetry of form and proportion, not in graceful of motion, or loveliness of feature, not in mental endowment, moral susceptibility, and emotional power. Not socially equal, not of necessity politically equal. Not this, but every human being equally entitled to his life, his liberty, and the fruit of his toil. The Democratic Party deny this fundamental doctrine of our government, and say that there is a certain class of human beings which have no rights. If you maliciously kill them, it is no murder. If you take away their liberty, it is no crime. If you deprive them of their earnings, it is no theft. No rights which another is bound to regard. Was there ever so much diabolism compressed into one sentence? Why do |the Democrats come to us with their complaints about the negroes? I for one feel no responsibility in the matter. I did not create them; was not consulted.”

As quoted in Pitchfork Ben Tillman, South Carolinian (1967), by Francis Butler Simkins. Louisiana State University Press. OCLC 1877696, p. 144.

Delaware State Republican Dinner, 8 April 1995
1995

Selections from the Letters and Speeches of the Hon. James H. Hammond, p. 126.
Context: I endorse without reserve the much-abused sentiment of Gov. M'Duffie, that "slavery is the corner stone of our Republican edifice;" while I repudiate, as ridiculously absurd, that much-lauded but nowhere accredited dogma of Mr. Jefferson, that "all men are born equal."

Sixth Lincoln-Douglas debate https://cwcrossroads.wordpress.com/2011/01/18/race-and-slavery-north-and-south-some-logical-fallacies/#comment-47553, (13 October 1860), Quincy, Illinois
1860s
Context: You know that in his Charleston speech, an extract from which he has read, he declared that the negro belongs to an inferior race; is physically inferior to the white man, and should always be kept in an inferior position. I will now read to you what he said at Chicago on that point. In concluding his speech at that place, he remarked, 'My friends, I have detained you about as long as I desire to do, and I have only to say let us discard all this quibbling about this man and the other man-this race and that race, and the other race being inferior, and therefore they must be placed in an inferior position, discarding our standard that we have left us. Let us discard all these things, and unite as one people throughout this land until we shall once more stand up declaring that all men are created equal'. Thus you see, that when addressing the Chicago Abolitionists he declared that all distinctions of race must be discarded and blotted out, because the negro stood on an equal footing with the white man; that if one man said the Declaration of Independence did not mean a negro when it declared all men created equal, that another man would say that it did not mean another man; and hence we ought to discard all difference between the negro race and all other races, and declare them all created equal.

Letter to longtime friend and slave-holder Joshua F. Speed (24 August 1855)
1850s, Letter to Joshua F. Speed (1855)
Context: You enquire where I now stand. That is a disputed point. I think I am a whig; but others say there are no whigs, and that I am an abolitionist. When I was at Washington I voted for the Wilmot Proviso as good as forty times, and I never heard of any one attempting to unwhig me for that. I now do more than oppose the extension of slavery.
I am not a Know-Nothing. That is certain. How could I be? How can any one who abhors the oppression of negroes, be in favor of degrading classes of white people? Our progress in degeneracy appears to me to be pretty rapid. As a nation, we began by declaring that "all men are created equal." We now practically read it "all men are created equal, except negroes." When the Know-Nothings get control, it will read "all men are created equal, except negroes, and foreigners, and catholics." When it comes to this I should prefer emigrating to some country where they make no pretence of loving liberty — to Russia, for instance, where despotism can be take pure, and without the base alloy of hypocracy [sic].

Attributed at a few sites to a debate in Peoria, Illinois with Stephen Douglas on 16 October 1858. No historical record of such a debate actually exists, though there was a famous set of speeches by both in Peoria on 16 October 1854, but transcripts of Lincoln's speech http://www.hti.umich.edu/cgi/t/text/text-idx?c=lincoln;cc=lincoln;type=simple;rgn=div1;q1=cleaver;view=text;subview=detail;sort=occur;idno=lincoln2;node=lincoln2%3A282 on that date do not indicate that he made such a statement. It in fact comes from a speech made by Douglas in the third debate http://www.hti.umich.edu/cgi/t/text/text-idx?c=lincoln;cc=lincoln;type=simple;rgn=div1;q1=fejee;view=text;subview=detail;sort=occur;idno=lincoln3;node=lincoln3%3A17 against Lincoln at Jonesboro, Illinois on 15 September 1858.
Misattributed

This they said, and this meant. They did not mean to assert the obvious untruth, that all were then actually enjoying that equality, nor yet, that they were about to confer it immediately upon them. In fact they had no power to confer such a boon. They meant simply to declare the right, so that the enforcement of it might follow as fast as circumstances should permit. They meant to set up a standard maxim for free society, which should be familiar to all, and revered by all; constantly looked to, constantly labored for, and even though never perfectly attained, constantly approximated, and thereby constantly spreading and deepening its influence, and augmenting the happiness and value of life to all people of all colors everywhere. The assertion that "all men are created equal" was of no practical use in effecting our separation from Great Britain; and it was placed in the Declaration, nor for that, but for future use. Its authors meant it to be, thank God, it is now proving itself, a stumbling block to those who in after times might seek to turn a free people back into the hateful paths of despotism. They knew the proneness of prosperity to breed tyrants, and they meant when such should re-appear in this fair land and commence their vocation they should find left for them at least one hard nut to crack. I have now briefly expressed my view of the meaning and objects of that part of the Declaration of Independence which declares that "all men are created equal".
1850s, Speech on the Dred Scott Decision (1857)

“The Religion of Life” (1858)

1920s, Speech on the Anniversary of the Declaration of Independence (1926)
Context: If all men are created equal, that is final. If they are endowed with inalienable rights, that is final. If governments derive their just powers from the consent of the governed, that is final. No advance, no progress can be made beyond these propositions. If anyone wishes to deny their truth or their soundness, the only direction in which he can proceed historically is not forward, but backward toward the time when there was no equality, no rights of the individual, no rule of the people. Those who wish to proceed in that direction can not lay claim to progress. They are reactionary. Their ideas are not more modern, but more ancient, than those of the Revolutionary fathers.