My father consoled me by telling me about the mistakes great heroes made when they were children. He told me that Mahatma Gandhi said, ‘Freedom is not worth having if it does not include the freedom to make mistakes.’ At school we had read stories about Mohammad Ali Jinnah. As a boy in Karachi he would study by the glow of street lights because there was no light at home. He told other boys to stop playing marbles in the dust and to play cricket instead so their clothes and hands wouldn’t get dirty. Outside his office my father had a framed copy of a letter written by Abraham Lincoln to his son’s teacher, translated into Pashto. It is a very beautiful letter, full of good advice. ‘Teach him, if you can, the wonder of books . . . But also give him quiet time to ponder the eternal mystery of birds in the sky, bees in the sun, and the flowers on a green hillside, ’ it says. ‘Teach him it is far more honourable to fail than to cheat.’

I think everyone makes a mistake at least once in their life. The important thing is what you learn from it. That’s why I have problems with our Pashtunwali code. We are supposed to take revenge for wrongs done to us, but where does that end? If a man in one family is killed or hurt by another man, revenge must be exacted to restore nang. It can be taken by killing any male member of the attacker’s family. Then that family in turn must take revenge. And on and on it goes. There is no time limit. We have a saying: ‘The Pashtun took revenge after twenty years and another said it was taken too soon.’

We are a people of many sayings. One is ‘The stone of Pashto does not rust in water, ’ which means we neither forget nor forgive. That’s also why we rarely say thank you, manana, because we believe a Pashtun will never forget a good deed and is bound to reciprocate at some point, just as he will a bad one. Kindness can only be repaid with kindness. It can’t be repaid with expressions like ‘thank you’.

Many families live in walled compounds with watchtowers so they can keep an eye out for their enemies. We knew many victims of feuds. One was Sher Zaman, a man who had been in my father’s class and always got better grades than him. My grandfather and uncle used to drive my father mad, teasing him, ‘You’re not as good as Sher Zaman, ’ so much he once wished that rocks would come down the mountain and flatten him. But Sher Zaman did not go to college and ended up becoming a dispenser in the village pharmacy. His family became embroiled in a dispute with their cousins over a small plot of forest. One day, as Sher Zaman and two of his brothers were on their way to the land, they were ambushed by his uncle and some of his men. All three brothers were killed.