I suffer from a more complex, persistent fear. It manifests itself in nerves, and on film the camera sees even the tiniest evidence of this. So you have to learn that when the director calls 'Action,' you don't go to this place of tension, but somehow you become free.

I did an interview once where I was asked who I found attractive and I went on about cartoons and Nala from 'The Lion King' - and it's a bit weird but various of my ex-girlfriends actually did look like Nala.

I'm quite ignorant about fashion and I'm colourblind, so it's all a tad tricky. My only knowledge of that world comes through Christopher Bailey, whom I first met in 2008 when I did a campaign for Burberry that featured musicians, artists, actors and sportsmen.

Making a film or doing a play are completely different experiences and entirely fulfilling, but completely unique. I also think one complements the other. People often say that theater is about flexing your muscles, and is actually real acting, whereas I sort of disagree.

If I do a film and have to get naked, that tends to dictate how often I go to the gym. Acting in 'Richard II' on stage was a huge physical workout, so I ended up more toned than I normally am.

What's really interesting about actors, is that we all have opinions on how people's careers look, but I think you never have any idea of your own, or what other people think of you.

I wish I could describe anything I do as conscious or strategized. To be honest, in acting, you have so little control. The only control you have is if you're lucky enough to be in a position, which is not very often, in which you have choice. It's about what choices you make, and for me, it's entirely instinctive.

What an extraordinary thing it can be, love, how it will not defined by gender, by sexuality, by race, by religion, by anything. It's something else. It's something other.

I hope, then, that every one who sees 'The Danish Girl' might be galvanized themselves to lead more authentic lives. How much lovelier would the world be then?