A playwright, especially a playwright whose work deals very directly with an audience, perhaps he should pay some attention to the nature of the audience response - not necessarily to learn anything about his craft, but as often as not merely to find out about the temper of the time, what is being tolerated, what is being permitted.
Edward AlbeeCuriously enough, the only two plays that I've done very much revision on were the two adaptations - even though the shape of them was pretty much determined by the original work. With my own plays, the only changes, aside from taking a speech out here, putting one in there (if I thought I dwelled on a point a little too long or didn't make it explicit enough), are very minor; but even though they're very minor - having to do with the inability of actors or the unwillingness of the director to go along with me - I've always regretted them.
Edward Albee