What I learned in Guinea is that we are all responsible for the state of our world. The world - and the system by which we trade, share, cooperate and conflict - is clearly not working. We are only as strong as our weakest members. UNICEF is run at every level by strong, relentlessly energetic, deeply capable people who use that strength, energy and capability to help those who need it most: the weakest, most disadvantaged women and children of our world. All I can do now is help make people aware of what is happening, of what they are doing. That is all that I can do. For now.

I find that, when I'm working, if I start the day with a run - outside, not in a gym, but just me out there in the elements, with only my own legs to propel me forward... It's something to do with just being in the world and getting out of my own head.

The difference between a hero and a villain is that they just make different choices.

Well, I don't know. When I signed my contract, I signed to play Loki in five more Marvel movies, but they were unspecified. So, if there will be more movies or not remains to be seen, but I like the idea of Loki turning up in the shadows when people least expect him, but you never know these things, the world changes and the things change, but I feel like I know who Loki is, so I wouldn't mind.

You never know what's around the corner. It could be everything. Or it could be nothing. You keep putting one foot in front of the other, and then one day you look back and you've climbed a mountain.

The thing about playing gods, whether you're playing Thor and Loki or Greco Roman gods or Indian gods or characters in any mythology, the reason that gods were invented was because they were basically larger versions of ourselves.

We're all intrigued, in our civilized world that we live in, and curious about how we would get on, on an undiscovered island that is untouched by man.