I think the same way about theatre, you go out there and you are creating a world for a moment that can actually have a real impact on people, present some kind of story that gives you something to think about when you walk away, feeling enriched - if it works out well.
“A musician cannot move others unless he too is moved. He must of necessity feel all of the affects that he hopes to arouse in his audience, for the revealing of his own humour will stimulate a like humour in the listener.”
“Let my name stand among those who are willing to bear ridicule and reproach for the truth's sake, and so earn some right to rejoice when the victory is won.”