• ''The Routledge Guidebook to Wittgenstein's Philosophical Investigations'' (The Routledge Guides to the Great Books), (Routledge, 2013) • ''Elucidating The Tractatus: Wittgenstein's Early Philosophy of Logic and Language'' (Oxford University Press, 2009) • "The Writer and Society: An Interpretation of Nausea", British Journal of Aesthetics 37 (1997), pp. 118–28. • "Wittgenstein's Remarks On Colour", Philosophy, Volume 66 (1991), Issue 258, pp. 435–453 == References ==