G.P. Baker was a Fellow of St John’s College, Oxford from 1967 until his death in 2002. He is the co-author with P.M.S. Hacker of a number of books on Wittgenstein, including the first two volumes of the four-volume
Analytical Commentary on the Philosophical Investigations (Blackwell Publishing 1980-1996), and with Katherine Morris of
Descartes’ Dualism (1996). He also wrote numerous articles on Wittgenstein, Frege, Russell, Waismann and Descartes.
Katherine Morris is a Lecturer and Fellow at Mansfield College, Oxford University. She and G.P. Baker co-authored Descartes’ Dualism (1996). She has published a number of articles on Wittgenstein, Sartre, Merleau-Ponty and Descartes, and is the author of ‘Sartre’ (forthcoming from Blackwell Publishing).