Before leaving town after Congress adjourned in March 1865, Stevens privately urged Lincoln to press the South hard militarily, though the war was ending. Lincoln replied, "Stevens, this is a pretty big hog we are trying to catch and to hold when we catch him. We must take care that he does not slip away from us." Never to see Lincoln again, Stevens left with "a homely metaphor but no real certainty of having left as much as a thumbprint on Lincoln's policy." On the evening of April 14, 1865, Lincoln was assassinated by Confederate sympathizer John Wilkes Booth. Stevens did not attend the ceremonies when Lincoln's funeral train stopped in Lancaster; he was said to be ill. Trefousse speculated he might have avoided the rites for other reasons. According to Lincoln biographer Carl Sandburg, Stevens stood at a railroad bridge and lifted his hat.