
“You don't write because you want to say something, you write because you have something to say.”
Notebook E: Epigrams, Wisecracks, and Jokes https://books.google.com/books?id=NIhKY8SpAE4C&q=%22You%20don%27t%20write%20because%20you%20want%20to%20say%20something%3B%20you%20write%20because%20you%27ve%20got%20something%20to%20say.%22&pg=PA123#v=onepage, edited by Edmund Wilson (1945)
Quoted, The Crack-Up (1936)