I'd like to come back to the West eventually. In the end abroad I am always a stranger, active politics in particular is not accessible to me and although people are generous, I can never be on the inside of a culture that relies a great deal on the private space and the family.

If democracy is to be rebuilt … it is necessary not just for the public to learn to trust their politicians, but for the politicians to learn to trust the public.

This idea that failure is not an option: It makes failure invisible, inconceivable and inevitable.

The world isnt one way or another. Things can be changed very, very rapidly by someone with sufficient confidence, sufficient knowledge and sufficient authority.

I had been walking one afternoon in Scotland and thought: Why don't I just keep going? There was, I said, a magic in leaving a line of footprints stretching across Asia.

The Afghan government is much better informed, much more intrusive and ambitious than I had guessed. There are amazing craftsmen in Kabul but few designers and wage rates are astonishingly high - which is a problem when trying to support and promote Afghan craft exports. The community in Murad Khani in the old city - who we are helping to restore their area - have been the best part so far - eccentric, led by a champion wrestler, determined, proud and courageous.

I found incredible kindness, dignity and hospitality in both Iraq and Afghanistan - am only alive because of it - the most worthwhile lesson of a twenty month walk to these countries was a deepening appreciation of the kindness of strangers.