I remember Tetro was a big deal to me at that time. It was going from zero to one: Never having been in a movie, a person who had no relationship to any of that, and that was my first movie.

I had four years of auditions, and nothing happened, until Francis Ford Coppola took a shot on me ['Tetro' in 2009]. I hadn't done a film, and suddenly I was the lead.

One of the big takeaways from that experience [in Blue Jasmin] was just what a thrill it was to act with somebody like Cate Blanchett operating on that caliber. Because what she was doing was very powerful. T

[ Being director] is really reassuring to me that it's just about who is right for that role and less about if you ace the audition. It's just about getting to know people, not about who's a better actor a lot of the time. It's about who fits that particular suit, you know?

With 'Hail, Caesar!' it was about all the skill sets I had to learn, but each movie requires a different way of working. You're a piece in a new world, and there is always a difficult part within that world. For me, it's not consistent from movie-to-movie, each film has a central challenge.

You need those people to also have power and authority, and in a way that has been the story of my career.

The biggest challenge to being an actor is when you're not working, just being unemployed, the downtime and not having anything to do.