I had, to begin with, a sort of backstairs knowledge; for in my teens I struggled for life in the office of an Irish gentleman who acted as land agent and private banker for many persons of distinction.  Now it is possible for a London author to dine out in the highest circles for twenty years without learning as much about the human frailties of his hosts as the family solicitor or (in Ireland) the family land agent learns in twenty days; and some of this knowledge inevitably reaches his clerks, especially the clerk who keeps the cash, which was my particular department.  He learns, if capable of the lesson, that the aristocratic profession has as few geniuses as any other profession; so that if you want a peerage of more than, say, half a dozen members, you must fill it up with many common persons, and even with some deplorably mean ones.  For “service is no inheritance” either in the kitchen or the House of Lords; and the case presented by Mr. Barrie in his play of The Admirable Crichton, where the butler is the man of quality, and his master, the Earl, the man of rank, is no fantasy, but a quite common occurrence, and indeed to some extent an inevitable one, because the English are extremely particular in selecting their butlers, whilst they do not select their barons at all, taking them as the accident of birth sends them.  The consequences include much ironic comedy.  For instance, we have in England a curious belief in first rate people, meaning all the people we do not know; and this consoles us for the undeniable secondrateness of the people we do know, besides saving the credit of aristocracy as an institution.  The unmet aristocrat is devoutly believed in; but he is always round the corner, never at hand.  That the smart set exists; that there is above and beyond that smart set a class so blue of blood and exquisite in nature that it looks down even on the King with haughty condescension; that scepticism on these points is one of the stigmata of plebeian baseness:  all these imaginings are so common here that they constitute the real popular sociology of England as much as an unlimited credulity as to vaccination constitutes the real popular science of England.  It is, of course, a timid superstition.  A British peer or peeress who happens by chance to be genuinely noble is just as isolated at court as Goethe would have been among all the other grandsons of publicans, if they had formed a distinct class in Frankfurt or Weimar.  This I knew very well when I wrote my novels; and if, as I suspect, I failed to create a convincingly verisimilar atmosphere of aristocracy, it was not because I had any illusions or ignorances as to the common humanity of the peerage, and not because I gave literary style to its conversation, but because, as I had never had any money, I was foolishly indifferent to it, and so, having blinded myself to its enormous importance, necessarily missed the point of view, and with it the whole moral basis, of the class which rightly values money, and plenty of it, as the first condition of a bearable life.