„Auxiliary to all this, and working hand in hand with it, the Nebraska doctrine, or what is left of it, is to educate and mold public opinion, at least Northern public opinion, not to care whether slavery is voted down or voted up. This shows exactly where we now are; and partially, also, whither we are tending.
It will throw additional light on the latter, to go back, and run the mind over the string of historical facts already stated. Several things will now appear less dark and mysterious than they did when they were transpiring. The people were to be left "perfectly free," subject only to the Constitution. What the Constitution had to do with it, outsiders could not then see. Plainly enough now, it was an exactly fitted niche, for the Dred Scott decision to afterward come in, and declare the perfect free freedom of the people to be just no freedom at all. Why was the amendment, expressly declaring the right of the people, voted down? Plainly enough now: the adoption of it would have spoiled the niche for the Dred Scott decision.“
— Abraham Lincoln 16th President of the United States 1809 - 1865