"The most important thing, my father told me, which I have never forgotten, and which I have often put unto practice was: If you get into a quarrel with anybody, hit him first. "If you hit first, the battle is half-won," my father always said "Don't let him hit first. You hit him first.""What's more," he never forgot to say, too "Usually one blow is all you need."I found this to be true."
--
Source : "Vokes - My Story" by Chris Vokes, John Philip Maclean, (p. 8), 1985.