You should prepare when you go to a public event to be public. That's when I will sign autographs. But not when you're going about your normal business.

Criticism challenges current findings. The effort to defend one's position can lead to deeper insights or consideration of options previously not considered.

I never had to worry about divestment because I never invested.

I think documentary filmmakers need as much protection as possible under journalist's privilege. How else is the public to know what is going on?

It's good to say, 'Look, I can't always be right, but my gut tells me this' - and then you confirm with your gut.

In fact you've got your hands tied behind your back when somebody chooses to take a low road in to you, there is nothing you can do about it, and so you just live with it and move on.

It's a creative enterprise, just like art, just like painting, music. Creating something can be done in different categories, so to do it in film is just another expression, which is great. Because it translates so well because so many people see the work, if you're lucky.