P. M. S. Hacker is an Emeritus Research Fellow of St John’s College, Oxford, UK. He is the author of numerous books and articles on philosophy of the mind and philosophy of language, and is the leading authority on the philosophy of Wittgenstein. Among his many publications is the four-volume Analytical Commentary on Wittgenstein's Philosophical Investigations, and its epilogue, Wittgenstein's Place in Twentieth Century Analytic Philosophy. His most recent work is Human Nature: The Categorial Framework, the first volume of a trilogy on human nature.
Together, M. R. Bennet and P. M. S. Hacker have authored the acclaimed Philosophical Foundations of Neuroscience (Blackwell, 2003).