Yes, it seems we've got this mutant gene in our human personality that makes us susceptible to this same kind of mistake over and over again. It's really uncanny how we build these beautiful multicultural edifices and then allow this switch to be flipped and everybody goes, 'Oh, the other, get them out of here.

And one of the things that I learned was you can't generalise at all about a woman in a veil. You can't think you know her story, because she will confound you over and over again. She may be an engineer or a diplomat or a doctor. Or she may be an unbelievable babe with bleached hair down to her waist.

Moral certainty can deafen people to any truth other than their own.

Jewish prayers are mostly about daily things - the sliver of a new moon, dew on the grass, the bread and the wine.

I'm a praying atheist. When I hear an ambulance siren, I ask for a blessing for those people in trouble, knowing that no one's listening. I think it's just a habit of mindfulness.

But that Franklin trip changed me profoundly. As I believe wilderness experience changes everyone. Because it puts us in our place. The human place, which our species inhabited for most of its evolutionary life. That place that shaped our psyches and made us who we are. The place where nature is big and we are small.

Write what you know. Every guide for the aspiring author advises this. Because I live in a long-settled rural place, I know certain things. I know the feel of a newborn lamb's damp, tight-curled fleece and the sharp sound a well-bucket chain makes as it scrapes on stone. But more than these material things, I know the feelings that flourish in small communities. And I know other kinds of emotional truths that I believe apply across the centuries.