" Wolfe grunted. “Unthinkable, Mr. Haft. Maintaining integrity as a private detective is difficult; to preserve it for the hundred thousand words of a book would be impossible for me, as it has been for so many others. Nothing corrupts a man so deeply as writing a book; the myriad temptations are overpowering. I wouldn’t presume—” Fritz had entered with a tray. First the beer to Wolfe, then the brandy to Bingham, the water to Upton, and the scotch and water to me. Upton got a pillbox from a pocket, fished one out and popped it into his mouth, and drank water. Bingham took a sip of brandy, looked surprised, took another sip, rolled it around in his mouth, looked astonished, swallowed, said, “May I?” and got up and went to Wolfe’s desk for a look at the label on the bottle. “Never heard of it,” he told Wolfe, “and I thought I knew cognac. Incredible, serving it offhand to a stranger. Where in God’s name did you get it? "

― Rex Stout , The Mother Hunt (Nero Wolfe #38)