P. M. S. Hacker is the leading authority on the philosophy of Wittgenstein, on which he has written ten books. He has also written extensively on the philosophy of language. His other area of specialization is philosophy and cognitive neuroscience, on which he has written three books together with the eminent neuroscientist, M. R. Bennett. For Philosophical Foundations of Neuroscience in particular, Hacker was appointed to an honorary UCL professorship in the Department of Neurology at University College London. Hacker has published three volumes of a tetralogy on human nature: The Categorial Framework, The Intellectual Powers and The Passions. The final volume will be The Moral Powers (forthcoming, 2020).

Preface; Acknowledgements; Section 1 Two Dialogues on Mind and Body; Introduction; First Dialogue On the Nature of the Mind; Second Dialogue The Mind and the Body; Section 2 Two Dialogues on Consciousness; Introduction; Third Dialogue The Mystery of Consciousness; Fourth Dialogue Consciousness as Experience - Consciousness as Life Itself; Section 3 A Dialogue on the Objectivity or Subjectivity of Perceptual Qualities; Introduction; Fifth Dialogue On the Objectivity or Subjectivity of Perceptual Qualities; Section 4 Two Dialogues on Thought; Introduction; Sixth Dialogue Thought; Seventh Dialogue Thought and Language; Section 5 A Dialogue on Ownership of Pain; Introduction; Eighth Dialogue Can You Have My Pain? Can Different People Have the Same Pain?