Lincoln was the only president in American history whose administration was bounded by war. - James M. McPherson

General Sherman, who had lived in the South, liked Southerners and did not at all sympathize with Northern racial views, yet became the most hated and feared destroyer of the South and its whole civilization. And I think he did so because he saw that as necessary to win the war. And I think Lincoln made some of his decisions—issuing the Emancipation Proclamation, for example, or turning Sherman loose — because he saw that as necessary to win the war.

People are going to dislike you if you make a decision, even if it turns out to be the right one.

To a good many southerners the events of 1861–1865 have been known as 'The War of Northern Aggression'. Never mind that the South took the initiative by seceding in defiance of an election of a president by a constitutional majority. Never mind that the Confederacy started the war by firing on the American flag. These were seen as preemptive acts of defense against northern aggression.