"The framers of the Constitution well understood that each locality, having separate and distinct interests, required separate and distinct laws, domestic institutions, and police regulations adapted to its own wants and its own condition; and they acted on the presumption, also, that these laws and institutions would be as diversified and as dissimilar as the States would be numerous, and that no two would be precisely alike, because the interests of no two would be precisely the same."

“Slavery is not the only question which comes up in this controversy. There is a far more important one to you, and that is, What shall be done with the free negro? We have settled the slavery question as far as we are concerned; we have prohibited it in Illinois forever; and in doing so, I think we have done wisely, and there is no man in the State who would be more strenuous in his opposition to the introduction of slavery than I would; but when we settled it for ourselves, we exhausted all our power over that subject. We have done our whole duty, and can do no more. We must leave each and every other State to decide for itself the same question. In relation to the policy to be pursued toward the free negroes, we have said that they shall not vote; whilst Maine, on the other hand, has said that they shall vote. Maine is a sovereign State, and has the power to regulate the qualifications of voters within her limits. I would never consent to confer the right of voting and of citizenship upon a negro; but still I am not going to quarrel with Maine for differing from me in opinion. Let Maine take care of her own negroes and fix the qualifications of her own voters to suit herself, without interfering with Illinois, and Illinois will not interfere with Maine.”

“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.”

“Mr. Lincoln simply contented himself at the outset by saying, that he was not in favor of social and political equality between the white man and the negro, and did not desire the law so changed as to make the latter voters or eligible to office. I am glad that I have at last succeeded in getting an answer out of him upon this question of negro citizenship and eligibility to office, for I have been trying to bring him to the point on it ever since this canvass commenced.”

“I hold that a Negro is not and never ought to be a citizen of the United States. I hold that this government was made on the white basis; made by the white men, for the benefit of white men and their posterity forever, and should be administered by white men and none others.”

“Abolitionism proposes to destroy the right and extinguish the principle of self-government for which our forefathers waged a seven years' bloody war, and upon which our system of free government is founded.”

“Lincoln - Douglas Debates at Bartleby.com”