I can feel infinitely alive curled up on the sofa reading a book.

Only when Stephen Strange has his accident and everything that he's ever had in his life falls apart that he becomes pretty monstrous. It's the self-loathing rage of a wounded animal and he doesn't have a coping mechanism at all. It ties in with the discipline and the magic of this world.

My own grandfathers were a submarine commander and a 'desert rats' tank operator in the Second World War.

I've never done a lead role in a film this big [like Doctor Strange], in a franchise this big. One of the reasons was, I wanted to know what the toy box was like. And it's just insane, the amount of facility that everyone gets, but the amount of artistry and craft that's brought to every aspect of filmmaking. I mean, you go to your first costume fitting and it's one of thirty. It's a myriad, but it's for a reason. There are so many incredible costumes in this.

Landing the role of Stephen Hawking was the most positively surprising thing that has happened to me.

I got live tweeted once by someone who was opposite my home in some rented accommodation. He was actually describing on twitter what I was doing. 'I took a shirt off, I went to the window, I put a shirt back on... ' And I've got blinds in my flat!

Metaphorically speaking, it's easy to bump into one another on the journey from A to B and not even notice. People should take time to notice, enjoy and help each other.