A passing familiarity with the history and workings of our Parliament tells us that more often than not it was the opponent's integrity rather than his sanity which was impugned. Winston Churchill accused a Parliamentary adversary of 'terminological inexactitude' - in other words of lying, which most people would understand to be a frontal attack on integrity. Moreover Neville Chamberlain ignored all Churchill's verbal attacks and blithely waved away the freedom of Czechoslovakia at Munich.