Amazon: the former artistic director and founder of The American Conservatory Theatre in San Fransisco, boils down almost forty years of teaching, acting and directing experience into possibly the most effective,educational and practical document about directing. Ball lays out in a logical, simple and jargon free manner the nuts and bolts of building a balanced right and left brained community which has complete and utter access to the creative impulse.
He gives the advice that actors, like cattle, can't hold too many ideas in their heads at one time so he urges the director to come up with a shorthand of small verbs or nouns with which the actor might make himself aware at all times. "Seduce," for example, might be his direction to the actor playing Cleopatra. Sounds elementary, but it works!