All these you may avoid but the Lie Direct; and you may avoid that too, with an If. I knew when seven justices could not take up a quarrel, but when the parties were met themselves, one of them thought but of an If, as, "If you said so then I said so"; and they shook hands and swore brothers. Your If is the only peace-maker; much virtue in If.
William Shakespeare, As You Like It (c.1599-1600), Act V, scene 4, line 100