I was thinking about honour. It’s a thing that changes, doesn't it? I mean, a hundred and fifty years ago, we would have had to fight if challenged. Now we'd laugh. There must have been a time a hundred years or so ago when it was a rather awkward question.Evelyn Waugh, The Sword of Honour Trilogy (New York: Alfred A. Knopf, 1994), p. 449 [Officers and Gentlemen (1955)].