I'm not really very ambitious.

I respect journalism. I was always very aware of journalism from a very broad point of view, but I'd say my baptism by fire was doing the Donald Margulies play Time Stands Still. That for me was a real education because I spent a lot of time with some incredible journalists, war reporters particularly - Bob Woodruff, Dexter Filkins - people who were very helpful in painting the picture for me and reading the accounts of people and what they experienced, a lot of PTSD.

I've played my fair share of unpleasant character, and I have to tell you that you sleep better when you're playing fun characters. You think you don't take it home with you, at the end of the filming day, but subconsciously, there's something floating around in the background there.

There are lots of people I admire and respect, but I don't necessarily want to be like them. I'm too happy being myself.

The reason I wanted to be an actor is that I don't want to play me for the rest of my life and make money out of that.

I went further and further back through the centuries to get a sense of perspective but now at least I understand why Irish history evokes such strong passions and emotions.

I know that Madonna is not a first-time filmmaker, but I have worked with a lot of first time filmmakers and I have worked with a lot of inexperienced film directors so that never has particularly worried me - I find it quite exciting - but I have never worked with a director who has had so little experience of directing who was so prepared.