" All the great teachers have preached that Man, originally, was a wanderer in the scorching and barren wilderness of this world - and that to rediscover his humanity, he must slough off attachments and take to the road.

Natural selection has designed us- from the structure of our braincells to the structure of our big toe for a career of seasonal journeys on foot through a blistering land of desert. So, if the desert were "home" if our instincts were forged in the desert to survive the rigours of the desert - then it is easier to unerstand why greener pastures pall on us; why possessions exhaust us and why Pascal's imaginary man found his comfortable lodgings a prison."

Bruce Chatwin.