Trigorin speaking to Nina about being a writer in The Seagull

All I think about day and night is having to write. I have to write, I have to… Here I am talking to you, I’m all worked up, and still I can’t forget for a minute that I’ve got a story to finish. I see a cloud, like that one, shaped like a piano. And all I can think is: I have to use that, one of my characters has to see a cloud shaped like a piano.