ILLUSTRATIONS 125 A letter from Frege to Husserl 138 Wittgenstein’s house akg-images/ullstein bild 146 John Henry Newman Getty Images 152 Pius IX’s Vatican Council Getty Images 167 Tilled field Joan Miro´ The Tilled Field (La Terre laboure´e) 1923–1924 Oil on Canvas 66 x 92.7 cm (26 x 36 12⁄ inches) Solomon R Guggenheim Museum, New York 72.2020 ß Succession Miro/ADAGP, Paris and DACS, London 2006 175 A lithograph of F Stassen illustrates the moment in Wagner’s opera in which Isolde hands the fateful potion to Tristan akg-images 183 A lecture manuscript of Peirce By permission of the Houghton Library, Harvard University; MS CSP 301 190 W.V.O Quine Harvard University 199 Phrenological diagram The Syndics of Cambridge University Library from Spurzheim ‘Phrenology or the Doctrine of the Mind’ 1825, c.82.23 213 Wittgenstein in the period when he was working out his final philosophy of mind Anthony Kenny 217 A mosaic from S Marco in Venice showing God infusing a soul into Adam ß Photo SCALA, Florence (St Mark’s Basilica, Venice, 1998) 229 A portrait photo of Schopenhauer taken about 1850 akg-images 240 Supermen as represented on the jacket of a Nietzschean book akg-images 336