“Difference in opinions has cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether the juice of a certain berry be blood or wine; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire; what is the best colour for a coat, whether black, white, red, or gray; and whether it should be long or short, narrow or wide, dirty or clean; with many more. Neither are any wars so furious and bloody, or of so long a continuance, as those occasioned by difference in opinion, especially if it be in things indifferent.”

—from Gulliver’s Travels by Jonathan Swift