As a London-based correspondent for Horace Greeley’s New York Tribune, Karl Marx wrote about Abraham Lincoln’s issuing of the Emancipation Proclamation, “Up to now we have witnessed only the first act of the Civil War—the constitutional waging of war. The second act, the revolutionary waging of war, is at hand.”

A character in Stendhal’s The Red and the Black, which is set in the run-up to the July Revolution in France, says at one point, “Politics…is a stone tied round the neck of literature which submerges it in less than six months. Politics in the midst of imaginative matter is like a pistol shot in the middle of a concert. The noise is racking without being energetic. It does not harmonize with the sound of any instrument.”