I've been very lucky to have achieved a lot of the things that I dreamt of achieving as a young man. But, at the end of the day – and I truly believe… - Leonardo DiCaprio

I lived in Hollywood and, ironically, I didn't know you could just go out and get an agent and go on auditions and try and become an actor, I thought it was like a Masonic thing, like a blood line you had to belong to - until I was 13. Then I realised what you had to do. It is the one thing I know I want to do for the rest of my life.

The challenge is to understand the psyche of somebody like that. There is no true genius or revolutionary ideas, I don’t think, without some element of compulsiveness or madness or obsession, and that’s certainly indicative of Howard Hughes. Understanding his obsessive-compulsive disorder was really the key for me for opening up who this man was.

I’ve always kind of made sure to maintain the sense of who I am and never be mean or cruel or snotty to anyone. Because, at the end of the day, it's not going to help you last in the business, and who wants to be around someone like that? I don't want to turn into ‘that guy.’ That guy!