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
• No other book in epistemology or philosophy of psychology provides such extensive overviews of consciousness, self-consciousness, intentionality, mastery of a language, knowledge, belief, memory, sensation and perception, thought and imagination
• Illustrated with tables, tree-diagrams, and charts to provide overviews of the conceptual relationships disclosed by analysis
• Written by one of Britain’s best philosophical minds
• A sequel to Hacker’s Human Nature: The Categorial Framework
• An essential guide and handbook for all who are working in philosophy of mind, epistemology, psychology, cognitive science, and cognitive neuroscience

P. M. S. Hacker is a Fellow of St John’s College, Oxford. He is the author of numerous books and articles on philosophy of mind and philosophy of language as well as philosophical foundations of cognitive neuroscience, and is the leading authority on the philosophy of Wittgenstein. Among his many publications is the monumental four-volume Analytical Commentary on Wittgenstein's Philosophical Investigations (Wiley-Blackwell, 1991, first two volumes co-authored with G. P. Baker), and its epilogue Wittgenstein's Place in Twentieth Century Analytic Philosophy (Wiley-Blackwell, 1996). His work (with Maxwell Bennett) on cognitive neuroscience, Philosophical Foundations of Neuroscience (2003) and History of Cognitive Neuroscience (2008), is renowned. The first volume of his trilogy on human nature, Human Nature: the Categorial Framework, was published in 2007.