" Secretary Seward, who was Lincoln’s Secretary of State—a long-headed and shrewd politician—prophesied that the war would be over in ninety days; and young men in thousands and hundreds of thousands came forward and volunteered to go down to Dixie and whip the South. They thought they would be back in ninety days; but the war lasted four years, and cost about half a million of lives. What was the matter? Why, the South was a good deal stronger than the North supposed. Its strength was underestimated. "

― Dwight L. Moody , The Overcoming Life and Other Sermons