Lincoln habitually would tell people he was totally ignorant of a subject which in fact he was quite well versed in, because then they would underestimate him, and when they underestimated him they would fall into his trap. Leonard Swett once said that anybody who mistook Lincoln for a simple man would soon end up with his back in a ditch.
American historian
[Abraham Lincoln believed that] [t]he only reason people do not succeed in a capitalist environment is because they are improvident, they are lazy, they are good for nothing, or they experience some incredible turn of bad luck—that’s why "better luck next time." That may seem like vanishingly small consolation to people who’ve just come through a depression, but for Lincoln, that kind of hardship paled beside slavery. Slavery says that there is a category of people that can never be allowed to rise, that cannot improve themselves no matter how hard they try because they will always be slaves. It’s very much the classic disjuncture between the Enlightenment and feudalism. Feudalism talks about people being born with status, and everyone comes into this world equipped with a status. This status is either free or slave, serf or nobility, elect or damned, whatever. For the Enlightenment people come into this world armed with rights, and the ideal political system is the system that allows them to realize those rights, to use those rights in the freest and most natural fashion possible.
To Lincoln, slavery undercut the free labor outlook on the world because it denied advancement and self-improvement. For Lincoln, the great attraction of any economic regime was the degree to which it permitted accumulation and self-promotion. He once described the ideal system as being one where the penniless beginner starts out working for somebody else, accumulates capital on his own by dint of savings, goes into business for himself, and then eventually becomes so successful that he hires others, who in turn continue the cycle. And he spoke of that as being the order of things in a society of equals. For him, the very notion of equality is a matter of equality of openness, aspiration, and opportunity.
Lincoln is, both culturally and in terms of his economic thinking, firmly and immovably located in the center of what we can call liberal democratic thought in the 19th century. He is very much market oriented, with tremendous confidence in the power of a capitalist society to transform for the better, and he believes in opening the possibilities of that society to as many as possible. To him, that’s what’s coterminous with liberty.
It thus became vital to the peace of the planters' minds that the frustrations of the "crackers," "sandhillers," or "poor white trash" be diminished or placated at all costs. This involved, first and foremost, keeping the bogeyman of race ever before the nonslaveholders' eyes, for whatever hatreds the poor whites nursed against the planters, they nursed still greater ones against blacks.
Lincoln's purpose in promoting Whig capitalism was not self-interest per se, but capitalism's necessary connection to equality, self-transformation, and social mobility, which were Lincoln's real goals. The essence of a free society, Lincoln said in 1859 (and here he was pirating J.S. Mill's Principles of Political Economy), was the openness it afforded to each of its citizens to make of themselves whatever they could, without the handicap of artificial inequalities based on status, nationality, or race. One could not do this in an economic environment governed by status, racial stratification, or centralized planning. Lincoln loved the Declaration's affirmation of all men's natural equality; but that equality would be meaningless without the unfettered opportunity to use it for something. If a national bank, tariffs, and "international improvements" promoted these opportunities, then they really were serving the interests of the natural rights to life, liberty, and the pursuit of happiness.