Scratch an actor and you'll find an actor.
Acting is a masochistic form of exhibitionism. It is not quite the occupation of an adult.
The office of drama is to exercise, possibly to exhaust, human emotions. The purpose of comedy is to tickle those emotions into an expression of light relief; of tragedy, to wound them and bring the relief of tears. Disgust and terror are the other points of the compass.
Lead the audience by the nose to the thought.
What is acting but lying and what is good lying but convincing lying?
I often think that could we creep behind the actor's eyes, we would find an attic of forgotten toys and a copy of the Domesday Book.