I just try to let myself really focus on the work that's ahead of me and what my job is and how I bring something to life.

We [with Neal Dodson and Corey Moosa] were constantly looking for features and looking for ways to get involved with people who were making stuff.

If it was a biopic about Glenn Greenwald, I would have immersed myself more fully in his personal life and gotten to know him as much as I could, but because it was much more about his relationship to this particular situation, to The Guardian, to Laura Poitras, and to Ewen MacAskill, and Edward Snowden, I was able to really learn a lot about him from reading his book and reading his many articles and accounts of that time.

We're living in an increasingly nationalistic, xenophobic time, and you can see it reflected in societies all over the world.

I think the next 50 years are going to present the human race with challenges that so far exceed the limitations of geopolitical boundaries or nationalist identity. We're going to be up against challenges that we can barely fathom at this point. So how we embrace them and deal with them will define a great many things about where we go, but, you know, it's hard to say. We're teetering on the edge, I would say.

The razor-sharp line of division that exists between political ideologies in our own country in the United States, I think it's clear that these movements are forming - and one is more forward thinking and more embracing and more inclusive. The other is less tolerant and more judgemental and more fear-driven and fear-based. I think, you know, over the next generation, we're going to see which way we turn as a civilisation.

The interesting thing about my character Sylar is that my strengths as an actor seemed to go completely against the shape of a character in the shadow.