Barty Crusoe and his Man Saturday by Frances Hodgson Burnett

I hope you remember that I told you that the story of Barty and the Good Wolf was the kind of story which could go on and on, and that when it stopped it could begin again.

It was like that when Tim's mother told it to Tim, and really that was what Tim liked best about it -- that sudden way it had of beginning all over again with something new just when you felt quite mournful because you thought it had come to an end. There are very few stories like that, -- very few indeed, -- so you have to be thankful when you find one.