It is only when an actor feels that his inner and outer life on the stage is flowing naturally and normally, in the circumstances that surround him, that the deeper sources of his subconscious gently open, and from them come feelings we cannot always analyse.
Constantin StanislavskiThe actor must use his imagination to be able to answer all questions (when, where, why, how). Make the make-believer existence more definite.
Constantin Stanislavski