There is so much poverty and desperation in South Sudan, and yet each side is militarily equipped.

With any role, you're extending yourself and acting out things that never happened to you.

I love playing all kinds of roles. I hope it doesn’t sound too pretentious, but I always feel human nature is like a piano, and there are 88 keys, and there are some white keys and some black keys, and each character is a different chord on the piano. Basically, I hope that in the course of my life, I will have played all 88 keys. So, I’ll have played heroes and villains and princes and kings and warriors and beggars and thieves and lovers and fathers and wizards and all of those things. That is why I’m an actor… I love studying people.

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.

I am so profoundly aware of my lack of skill to make any material difference. I am not a doctor. I can't influence foreign policy. I can't build schools. I can't chemically engineer the protein paste that helps people with acute malnutrition. But I can talk about it, and so can you.

We're all flawed heroes. Responsibility is power. Take responsibility for the consequences of your actions, and the world is yours. Everything is a choice.

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.