You and I are different races. We have between us a broader difference than exists between almost any other races. Whether it be right or wrong, I need not discuss; but this physical difference is a great disadvantage to us both, as I think. Your race suffer very greatly, many of them by living amongst us, while ours suffer from your presence. In a word, we suffer on each side. If this is admitted, it affords a reason at least why we should be separated.

Statement to the Deputation of Free Negroes (14 August 1862), in The Collected Works of Abraham Lincoln, edited by Roy P. Baler, Rutgers University Press, 1953, Vol. V, page 371