They who assert that a blind fatality produced the various effects we behold in this world talk very absurdly; for can anything be more unreasonable than to pretend that a blind fatality could be productive of intelligent beings.
A good or great performance is like peeling an onion; in every scene you reveal another layer, something the audience hasn't seen until then. They stay involved because they are constantly learning about and discovering the character they are watching. They can't take you for granted and it keeps them hooked.