Wittgenstein in Exile
James C. Klagge
The MIT Press
"James Klagge's portrayal of Wittgenstein as an exile is original,                  engaging, and persuasive. In a crowded field, it is a genuinely useful addition to                  the secondary literature and should be read by all those interested in understanding                  both Wittgenstein himself and his philosophy." -- Ray Monk ,                  author of Ludwig Wittgenstein: The Duty of Genius