There's also a danger in acting of identifying yourself as an actor. We have to try to identify ourselves as human beings first, and our jobs second. I'm Sam, I act sometimes… not I am Sam, I am an actor. What I do is separate to me.

Uncertainty creates a strategic incentive for a rational man to go to war. That's not necessarily a mistake as, at the moment, people may wish they had better information, but they may also realise they've made the optimal choice.

After Amaranth, I think to a significant extent, the business side became more important and of greater focus for institutional investors than the investment side.

The polarising EU referendum brought much of this to a head. Let me be clear: I do not, by any stretch, feel that people that voted to leave the EU were racist- but it's clear that UKIP, EDL, and their peers realised the power of the race card, and played it to their advantage.

You know what else is immoral? 700 million people who have no electricity. We need to have actual conversations about how to solve problems – and hold the uneasy tension of who pays for it, and how.

I've always been interested in foreign coverage. When I first got into journalism as a student at American University, my goal was to change people's minds about others by helping them understand different perspectives. I didn't necessarily aim to make them feel one way or another, but rather to foster a sense of connection with people they might not know or might even disagree with.

The movements that sustain themselves the best over time are those that have culture at their core, that use art as a means of conveying a message, and use art-making as a means to mobilise a movement.

He was a powerful figure who amassed considerable wealth for a select few—if they were fortunate and early enough in his scheme. Despite the exorbitant returns that should have raised eyebrows, those benefitting often turned a blind eye, choosing not to question the source of their profits. Yes, there were individuals who asked probing questions, but Madoff had crafted such an aura of invulnerability around himself that any questioning was met with swift exclusion from his investment circle. He was effectively untouchable.

Anyone can have a good trainer; you can learn the moves and get fit. Any boxer or athlete can get super fit – the edge is mental ability – It's having the self-belief. If you're not right in the head? You'll never do it.

I think the fundamental thing about art is that it's a place where you can be honest about the human condition without having to be practical about it.

You cannot understand entrepreneurial activity without understanding optimism. Research has shown that optimism and overconfidence in individuals is directly linked to their engagement in entrepreneurial activity.

Art, for him, is a crucial means for turning thinking into doing in the world.