To get a horse to hit a mark without a rider, to get it to stand up, to get it to rear, to get it to pick up a bucket and bring it over is amazing. It's hard work and very rewarding but can be dangerous.

Sometimes during a conversation with a journalist - where you are answering things you never normally talk about, not even with some of your closest friends - you end up being quite confessional, and you don't think about the amplification of that. No matter how fancy these journalists are, they have editors or political leanings behind their publications, which means that, basically, they're going to shape what you've said into an article they've already written. So you have to be really careful with your words.

There was a moment of extraordinary humbleness and humility and pride, as well, with my father when he turned to me - and I think it was after I played Salieri in "Amadeus" at university. And he said, You're better than I ever was or ever could be, you should do this for profession. You'd have a good time.

It's an interesting arc. You start with a character [Doctor Strange] who's likeable and charming but very arrogant and distant. He's funny but you can see there are massive holes in his life. It's a very painful transition and all that he becomes is tested so quickly and violently.

Kevin Feige said to me: "I don't think we've ever put an actor through quite as much as this, physically and mentally." I'll wear that as a badge of honour. It was endless.

Why this character [Doctor Strange] is being introduced, to open up the next chapter. A

When you start getting jobs, and see your mates from drama school, you don't really want to talk about it, because you have this innate sense of guilt that it's not fair that others aren't doing exactly what you're doing. I do have that.