Thomas Erskine defended Thomas Paine after authorities decided to persecute him for the radical ideas contained in his Rights of Man. Here, Erskine tells a story that explains to Paine’s prosecutors why someone who threatens force during an argument is almost surely wrong:
You must all remember, gentlemen, Lucian’s pleasant story: Jupiter and a countryman were walking together, conversing with great freedom and familiarity upon the subject of heaven and earth. The countryman listened with attention and acquiescence while Jupiter strove only to convince him; but happening to hint a doubt, Jupiter turned hastily around and threatened him with his thunder. ‘Ah, ha!’ says the countryman, ‘now, Jupiter, I know that you are wrong; you are always wrong when you appeal to your thunder.’ Quoted from J.B. Bury, A History of Freedom of Thought, pp. 130-31.He's right. An argument can only truly be won on the merits.The world would be a better place if more people realized that.