I always found the extraordinary loss of life in the First World War very moving. I remember learning about it as a very young child, as an eight- or nine-year-old, asking my teachers what poppies were for. Every year the teachers would suddenly wear these red paper flowers in their lapels, and I would say 'What does that mean?'

I think cruelty is just loneliness disguised as bitterness.

There is so much poverty and desperation in South Sudan, and yet each side is militarily equipped.

Real love is strange and changeable… but also somehow constant.

I try not to make plans. God always laughs at your plans.

Having seen what I've seen in South Sudan, there's no way I can't talk about it.

When a new project comes along, I want to know that the experience is going to be challenging and exciting. Part of me is going to be drawn to doing something new and also the satisfaction of intellectual curiosity.