But what I really believe is education is a key to pretty much everything - prosperity, economics, peace, stability.

There is still a desperate need for investment and promotion of education in rural Pakistan and Afghanistan. Official figures put Pakistan literacy rate over 45%, but in many rural areas we work it is about 10-15%, and for girls even lower.

Haji Ali taught me to share three cups of tea, to slow down and make building relationships as important as building projects. He taught me that I had more to learn from the people I work with than I could ever hope to teach them.

When ordinary human beings perform extraordinary acts of generosity, endurance or compassion, we are all made richer by their example. Like the rivers that flow out of the Karakoram and the Hindu Kush, the inspiration they generate washes down to the rest of us. It waters everyone's fields.

Yes, I was detained for eight days in Waziristan in 1996. It was against my will, and my passport and money were taken from me. I was not mistreated or harmed, but I was also not allowed to leave.

If you really want to change a culture to empower women improve basic hygiene and health care and fight high rates of infant mortality the answer is to educate girls.

Some of the most memorable moments I've had is to have my family along - who are our greatest ambassadors for peace. Politics will never bring peace, but people will.