A play is a parenthesis that contains all the material you think has to be contained for the action of the play. Where do you end that? Where the characters seem to come to a pause. . . where they seem to want to stop - rather like, I would think, the construction of a piece of music.
Do you remember how you felt at seventeen? I do and I don't (. . . ) Imagine you came from outer space and someone showed you a butterfly and a caterpillar. Would you ever put the two of them together? That's me and my memories.