Back to basics

The germ of my plays? I'll be as accurate as I can about that. I went into a room and saw one person standing up and one person sitting down, and a few weeks later I wrote The Room. I went into another room and saw two people sitting down, and a few years later I wrote The Birthday Party. I looked through a door into a third room, and saw two people standing up and I wrote The Caretaker.

--- Harold Pinter