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Ludwig Wittgenstein Archive Cambridge, Michael Nedo. Original owner: Clara Sjögren, Vienna: 1, 2 3, 4, 5
Ludwig Wittgenstein Archive Cambridge, Michael Nedo. Original owner: Thomas Stonborough, Vienna: 6
Deutsches Literaturarchiv Marbach (dla): 7, 8, 9, 10 (NL Henning Ritter), 11 (Suhrkamp Archive)
akg images: 12 (Bilderarchiv Pisarek), 13 (Imagno), 14 (F. Frith Collection)
ullstein bild: 15 (ullstein bild—akg), 16, 17, 18 (all: ullstein bild—ullstein bild), 19 (Photo 12)
Dokumentationsbibliothek Davos: 20, 21 22 (all: private archive Dr. Henning Ritter), 23, 24 (both: Fotosammlung Müller)
Akademie der Künster (adk) / Walter Benjamin Archiv, Berlin: 25 (Photograph: Joel Heinzelmann), 26 (Asja Lacis, ca. 1924)
Wikimedia Commons / Galerie Bassenge (www.bassenge.com): 27
HarperCollins Publishers: Excerpt from pp. 232, 234 from Being and Time by Martin Heidegger, translated by John Macquarrie and Edward Robinson. Copyright © 1962 by Harper & Row, Publishers, Incorporated. Used by permission of HarperCollins Publishers.
Harvard University Press: Excerpt from Martin Heidegger: Between Good and Evil by Rüdiger Safranski, translated by Ewald Osers. Cambridge, MA: Harvard University Press. Copyright © 1998 by the President and Fellows of Harvard College. Used by permission of Harvard University Press.
Hymns Ancient & Modern Ltd.: Excerpt from Heidegger and Christianity by John Macquarrie, SCM Press. Copyright © 1994 by John Macquarrie. Used by permission of Hymns Ancient & Modern Ltd. rights@hymnsam.co.uk.
MIT Press: Walter Benjamin, “Moscow Diary,” October 35 (Winter 1985), pp. 9–135. © 1986 by the Massachusetts Institute of Technology. Published by the MIT Press. Used by permission of MIT Press.
The Random House Group Limited: Excerpt from Ludwig Wittgenstein: The Duty of Genius by Ray Monk, published by Vintage, a division of The Random House Group Limited. © 1989. Reprinted by permission of The Random House Group Limited.
Verso Books: Excerpt from The Origin of German Tragic Drama by Walter Benjamin, translated by John Osborne. London: Verso, 2009. Used by permission of Verso Books.
Wiley Books: Wittgenstein in Cambridge: Letters and Documents, 1911–1951 by Ludwig Wittgenstein, edited by Brian McGuinness. 4th ed. Malden, MA: Blackwell, 2008. Used by permission of Wiley Books.