The art of the theater is action. It is the study of commitment. The word is an act. To SAY the word in such a way as to make it heard and understood by all in the theater is a commitment — it is the highest art to see a human being out on a stage speaking to a thousand of his or her peers saying, 'These words which I am speaking are the TRUTH — they are not an approximation of any kind. They are the God's truth, and I support them with my life,' which is what the actor does on stage.
David Mamet