“He’ll be coming and going…[o]ne day you’ll see him and another you won’t. He doesn’t like being tied down–and of course he has other countries to attend to. It’s quite all right. He’ll often drop in. Only you mustn’t press him. He’s wild, you know. Not like a tame lion.” – The Lion, the Witch and the Wardrobe, C.S. Lewis (British novelist, 1898-1963)