“Bear in mind, now, that most of this work was done by men who had no intention whatever, when they enlisted, of making war to end slavery. Slavery was killed by the act of war itself. It was the one human institution on all the earth which could not possibly be defended by force of arms, because that force, once called into play, was bound to destroy it. The Union armies which ended slavery were led by men like Grant and Sherman, who had profound sympathies with the South and who had never in their lives shown the slightest sympathies with the abolitionists. But they were also men who believed in the one great, fearful fact about modern war--that when you get into it, the guiding rule is that you have to win it.”