Book excerpt: When Jessa Crispin was thirty, she left Chicago and took off for Berlin. Half a decade later, she's still on the road, in search not so much of a home as of understanding.Fascinated by exile, Crispin travels an itinerary of of places that have drawn writers who needed to break free from their origins and start afresh.She reflects on Maud Gonne fomenting revolution, on Nora Barnacl, Rebecca West, Margaret Anderson and Jean Rhys.