One thing which Stephen A. Douglas was temperamentally incapable of doing was admitting he was wrong. He always believed that 'popular sovereignty' - the core doctrine of the Kansas-Nebraska Bill - was the right solution to the slavery controversy; and even though it had failed to solve much of anything in Kansas and Nebraska, he stubbornly insisted that this was because it had never been adequately tested.

Corporations did not achieve the scale we normally associate with them until the 1880s; but it's still hard to imagine that Abraham Lincoln would offered much in the way of determined opposition. William Herndon said that they always thanked the Lord when a corporation came knocking at their office door to hire them.

It would be pleasant to believe that some of Lincoln's DNA is actively swimming around in somebody's soup, but all the evidence is against it. And of course, there's always the risk that what we might get would be more Robert Todd Lincoln than Abraham Lincoln.

Abraham Lincoln would have been happy to have solved the slavery problem by compensation - in fact, drew up a gradual, compensated emancipation plan as early as November, 1861 - but no slaveholders were willing to go along with it.

One thing which Stephen A. Douglas was temperamentally incapable of doing was admitting he was wrong. He always believed that 'popular sovereignty' - the core doctrine of the Kansas-Nebraska Bill - was the right solution to the slavery controversy; and even though it had failed to solve much of anything in Kansas and Nebraska, he stubbornly insisted that this was because it had never been adequately tested.

Abraham Lincoln did have intellectual instincts, a tremendous curiosity on a broad range of subjects, and a near-photographic memory for what he read. He was, at the end of the day, a politician: politics were his heaven, said William Herndon. But Lincoln did take comfort in ideas and books, more so than almost any other president, and he went to books and ideas in moments of perplexity to sort things out. Philosopher, no, but thoughtful and "surprisingly well-read" for his day.

Remember that Abraham Lincoln was a Whig far longer than he was a Republican. As a whole, the Whigs looked upon banks and corporations as a more efficient means of development; the Jacksonian Democrats thought they were the tools of the devil, but Whigs like Lincoln disagreed. During his presidency, Lincoln favored the re-construction of a national financial system, and his most important 'internal improvement' project was the Pacific railroad.