Directing is about seeing twenty moves ahead while you’re working on the next five.
The director is the storyteller who sees the past, present, and future. He has probably read hundreds of stories and scripts to find a worthwhile screenplay to turn into a film. He has spent months, sometimes years, studying the script. He is responsible for conceiving the images, getting them on film, and giving himself and the editor sufficient coverage to put together a good movie. He is responsible for the overall look of the film, and with his camera and his actors he creates the pieces that make up the whole movie.
There is more to acting than just learning your lines by rote ...