He said with tongue firmly in cheek.
BTW, do you know what Lincoln did for a living before he got mixed up in politics and saved the Union?
I'm a Southerner. I have trouble revering Lincoln; I happen to believe that the South had the right to secede, and Lincoln's "saving" the Union was the beginning of our current bloated Federal government- which is another argument on the side of lawyers ruining the country, since Lincoln was one.
It's entirely appropriate that you used the word 'believe' when you cite the Democratic Party's fictional history of America. You have to believe it, because you can never know it as truth.