Heath Ledger's performance in 'The Dark Knight' quite simply changed the game. He raised the bar not just for actors in superhero films, but young actors everywhere; for me. His performance was dark, anarchic, dizzying, free, and totally, thrillingly, dangerous.

I don't envy young actors.

I love working with children and this young boy, Thomas Sangster, is quite a remarkable young actor. He raises your game, you know. He certainly raised mine.

Showing young children in these communities, that there are outlets for their feelings, that there is room in a space for their stories to be told, and that they will be applauded - and it's not about ego, it's about connection: that their pain is everybody else's pain.

I tell young actors to do anything that will sustain them.

My advice to young actors is to push yourself and to aspire to be great.