In every well-written play the battle rages between the primary powers of Good and Evil, and it is this battle which constitutes the life impulse of the play, its driving force, and is basic to all plot structures...In any true piece of art...the beginning and the end are, or should be, polar in principle. All the main qualities of the first section should transform themselves into their opposites in the last section.

To the Actor: On the Technique of Acting (ed. Routledge, 2013) - ISBN: 9781135135300