On the other hand, the free states carry on their government on the principle of the equality of men. We think slavery is morally wrong, and a direct violation of that principle. We all think it wrong. It is clearly proved, I think, by natural theology, apart from revelation. Every man, black, white or yellow, has a mouth to be fed and two hands with which to feed it, and that bread should be allowed to go to that mouth without controversy.

Speech at Hartford (1860)