"I think I know what you mean. You think that I have done you a service; so you feel yourself bound to give me something which I am not to give to a neighbour, unless he has done something special for me. I have heard of this kind of thing; but pardon me for saying, that it seems to us a troublesome and roundabout custom; and we don't know how to manage it. And you see this ferrying and giving people casts about the water is my business, which I would do for anybody; so to take gifts in connection with it would look very queer. Besides, if one person gave me something, then another might, and another, and so on; and I hope you won't think me rude if I say that I shouldn't know where to stow away so many mementos of friendship."