"I'll tell you, auntie, what you shall do--that is to say, of course, if you don't mind.  Whenever you see me showing moral cowardice, or want of moral courage, and I suppose that comes much to the same thing, and you would like to give me a hint without speaking, would you put one of your hands quietly on the table, and then the other across it--just so--and leave them crossed till I notice them?"