" Well, I know," she said. "You'll pretend you were men instead of babies, and you'll be played in the movies by Frank Sinatra and John Wayne or some of those other glamorous, war-loving, dirty old men. And war will look just wonderful, so we'll have a lot more of them. And they'll be fought by babies like the babies upstairs."
So then I understood. It was war that made her so angry. She didn't want her babies or anybody else's babies killed in wars. And she thought wars were partly encouraged by books and movies.

So I held up my right hand and I made her a promise: "Mary," I said, "I don't think this book of mine will ever be finished. I must have written five thousand pages by now, and thrown them all away. If I ever do finish it, though, I give you my word of honor: there won't be a part for Frank Sinatra or John Wayne.
"I tell you what," I said, "I'll call it 'The Children's Crusade.'"
She was my friend after that. "

― Kurt Vonnegut Jr. , Slaughterhouse-Five