Book excerpt: 'In every religion I can think of, there exists some variation on the theme of abandoning the settled life and walking one's way to godliness. The Hindu Sadhu, leaving behind family and wealth to live as a beggar; the pilgrims of Compostela walking away their sins; the circumambulators of the Buddhist kora; the Hajj. By taking to the road we free ourselves of baggage, both physical and psychological. We walk back to our original condition, to our best selves.' Robyn Davidson has spent a good part of her life with nomads. In this fascinating and moving essay she evokes a vanishing way of life, and notes a paradox- that even as classical nomads are disappearing, hypermobility has become the hallmark of contemporary life. In a time of environmental peril, she argues, the nomadic way with nature still offers valuable lessons. No Fixed Address is part lament, part evocation and part exhilarating speculative journey.