A true soldier does not argue as he marches, how success is going to be ultimately achieved. But he is confident that if he only plays his humble part well, somehow or other the battle will be won. In is that spirit that every one of us should act. It is not given to us to know the future. But it is given to everyone of us to know how to do our own part well.
When you want to put something into your part that is not in the play, you must ask the author-or some other author-to lead up to the interpolation for you. Never forget that the effect of a line may depend not on its delivery, but on something said earlier in the play, either by somebody else or by yourself, and that if you change it, it may be necessary to change the whole first act as well.
Civil disobedience has an honourable history, and when the urgency and moral clarity cross a certain threshold, then I think that civil disobedience is quite understandable, and it has a role to play.
One of the tricks to writing great plays is to get people in a room together and not let them leave. You want the tension to escalate. Keeping them there is the hardest part, so you have to take away any excuse for them to leave.
There is no reason why a joke should not be appreciated more than once. Imagine how little good music there would be if, for example, a conductor refused to play Beethoven's Fifth Symphony on the ground that his audience might have heard it before.