Authors:

When an actor plays a scene exactly the way a director orders, it isn't acting. It's following instructions. Anyone with the physical qualifications can do that. So the director's task is just that – to direct, to point the way. Then the actor takes over. And he must be allowed the space, the freedom to express himself in the role. Without that space, an actor is no more than an unthinking robot with a chest-full of push-buttons.

Biography/Personal Quotes, www.imdb.com.
When an actor plays a scene exactly the way a director orders, it isn't acting. It's following instructions. Anyone with the physical qualifications can do that. So the director's task is just that – to direct, to point