The Intellectual Powers is a philosophical investigation into the cognitive and cogitative powers of mankind. It develops a connective analysis of our powers of consciousness, intentionality, mastery of language, knowledge, belief, certainty, sensation, perception, memory, thought, and imagination, by one of Britain's leading philosophers. It is an essential guide and handbook for philosophers, psychologists, and cognitive neuroscientists.

• The culmination of 45 years of reflection on the philosophy of mind, epistemology, and the nature of the human person
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Wittgenstein: Comparisons and Context is a collection of P. M. S. Hacker's papers on Wittgenstein and Wittgensteinian themes written over the last decade. It presents Hacker's own (Wittgensteinian) conception of philosophy, and defends it against criticisms. Two essays compare Wittgenstein with Kant on transcendental arguments, and offer a Wittgensteinian critique of Kant's transcendental deduction. Two further essays trace the development of Wittgenstein's philosophy of psychology, and examine his anthropological and ethnological approach to philosophical problems. This leads...

The Second Edition of Wittgenstein: Rules, Grammar and Necessity (the second volume of the landmark analytical commentary on Wittgenstein's Philosophical Investigations) now includes extensively revised and supplemented coverage of the Wittgenstein's complex and controversial remarks on following rules.

• Includes thoroughly rewritten essays and the addition of one new essay on communitarian and individualist conceptions of rule-following
• Includes a greatly expanded essay on Wittgenstein's conception of logical, mathematical and metaphysical necessity
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