"Write a good book, a book to make people better and happier."
"A book with a purpose! No, Kitty."
"Well then, a spring book. This night isn't a night with a purpose, because it's lovely."
He laughed quite gaily.
"Humorist! Why did you bring me out into it?"
"To influence you against that book."
He was silent.
"Are you angry, Mark?"
"No, dear."
"Will you do what I ask?"