The Mad Hatter: Have I gone mad? Alice: I'm afraid so. Your'e entirely bonkers. But I'll tell you a secret. All the best people are. From the Mad Hatter's Tea Party in Alice in Wonderland by Lewis Carroll.
Alice in Wonderland Mad Hatter: Would you like a little more tea? Alice: Well, I haven't had any yet, so I can't very well take more. March Hare: Ah, you mean you can't very well take less. Mad Hatter: Yes. You can always take more than nothing.