I think that the process of making a film is an underrated factor in how that film turns out.

I think, as an actor, and particularly if you are playing the lead in something, you have to view yourself as the head of department for the cast. All of the other departments are accountable and have somebody at the helm who is leading them all the time, and I don't think that the actors should be any different.

Being in Harry Potter is like being in the Mafia. Once you are in, you are never really out.

As far as I can tell, most actors' main motivation is self-doubt and neuroses.

There were some parts of the film [Swiss Army Man] that the Daniels [Kwan and Scheinert] really wanted to look as elegant as a piece of ballet. As Hank and Manny go on in the story, they get better and better at being with each other and more and more adept - Hank knows more and more what Manny's going to need at any given point, and having that choreography helps a bit.

Franchises aren't to be avoided. They can be exciting, and they give you opportunities to do other films.

If you like the book, you'll hate the movie.