It was recognized as a necessary evil at the time, and the justification for the ratification of the Constitution with slavery is that any alternativ… - Harry V. Jaffa

Well, in the first place, I deny that Lincoln acted unconstitutionally at any time during the Civil War. It was a civil war. There were traitors in the midst of all of the free states. The possibility of recruiting soldiers and keeping them from deserting. There was lots of desertion on both sides of the Civil War, and it just happens that there were more Confederate soldiers executed for desertion than there were Union soldiers. But there were plenty of executions on both sides.

And comparing what happened in England—after all, in England the Parliament in Westminster was making laws for the West Indies. The West Indians didn't have any representation in the Parliament. The laws were made for them, and they had to go along with it. There was no such power within the Federal government to interfere with slavery, except by limiting the expansion of slavery. And it was Lincoln’s belief—and I think the best economic analysis that we have of the American economy in the antebellum United States indicates—that if the expansion of slavery had been ended, and if it was no longer possible for surplus slaves to be sold from the old states to new territories, that the pressure within the states to adopt programs of emancipation would become great enough to do that.

The paradox of calling the same human beings persons and property brings the cause of the Civil War into the sharpest focus. A person by definition is a being possessed of a rational will. A chattel by equal definition is a piece of movable property without a rational will. Because a horse or a dog lacks a rational will, its owner is responsible for any damage or injury it may cause. But slaves were held as responsible for their own actions, as were their masters, under the criminal codes of the slave states. The slave owners, in seeking to have the slaves counted as five-fifths, were asserting that they were full human beings. At the same time, by claiming the right to their labor as chattels, they were asserting them to be sub-human. How the slaves could be both was something that Jefferson Davis and his friends never explained.