This illustration is based on a man named, Jean-Albert Dadas. He was diagnosed with Dromamania, which is an uncontrollable psychological urge to wander. I first learned about his story from an old New York Times Book Review on a book titled,"The Man Who Walked Away", by Maud Casey. Dadas would suddenly set out on foot and reach cities as far away as Prague, Vienna and Moscow with no memory of his travels.