the lifelike acting of an actor is built, not on his representing the copied results of feelings, but on his causing the feelings to arise, develop, grow . into other feelingsto live before the spectator. Hence the image of a scene, a sequence, of a whole creation, exists not as something fixed and readymade. It has to arise, to unfold before the senses of the spectator.
The author explains that any scene is something dynamic rather than stable.