Eric Berne
Author: Eric Berne
Publisher: Grove Press (1972)

In both the theater and in real life, the cues have to be memorized and spoken just right so that the other people will respond in a way that justifies and advances the action.  If the hero changes his lines and his ego state, the other people respond differently.  This throws the whole script off, and that is the aim of therapeutic script analysis.  If Hamlet begins to use lines from Abie's Irish Rose, Ophelia has to change her lines, too, in order to make sense of it, and the whole performance will proceed differently.  The two of them might then take off together instead of skulking around the castle - a bad play, but probably a better life.