See, my Poppie, Frank Trippett, was also a writer himself. And, being a writer, he was in love with words. He would just sit back in his big leather recliner and read the dictionary like you would a novel, starting on page one and absorbing all the knowledge of all these words into his psyche. The dictionary was more than just a resource for him, he genuinely took pleasure from just learning about and discovering new words. I thought his answer to the question was pretty fascinating. It's stuck with me ever since he first explained it to me way back when I was still a little kid, and it's inspired my own answer to that same question as well.
I'm really not a religious person, so out goes the Bible. And I never re-read books, ever, so even bothering to think of a novel to have with me and keep me company would be all but completely pointless. Now, I can be a bit of a smartass, but I'll hold off on the smartass response for the purposes of this post. No, if I were stranded on a desert island and I could have the choice of one book to have with me, that book would be the thesaurus.
Being a writer myself, I, too, have a thing for words. But the thing is, I also have issues with getting stuck on them, so I oftentimes find myself digging through a thesaurus to find what I was looking for. It's a problem I come across quite a bit, where I know the word I mean to use, but it just won't come to me at the time. And it especially sucks when it happens during conversation, or if I'm trying to explain something to someone (and it's even worse when it happens when I'm talking to myself! ... er, I mean, uh...). There's not much I can do about it during those awkward social situations, but at least when it comes time to sitting down and writing, whenever I get stuck like that, I can always just pull out the ol' thesaurus and get unstuck just as quick. And with such a tool at my side, if I were stranded on a desert island, I'd be able to sit around and write out my own books to occupy my time, so I wouldn't necessarily even need any others at that point anyways.
So yeah, the thesaurus would be my desert island book. And while mine is certainly more for resourceful reasons, I probably wouldn't have even considered it had it not been for my Poppie's own ingenious response. But I'd also love to hear your own responses, so please feel free to let me know what book you'd want to have with you if you were stranded on a desert island.