P.M.S. Hacker is the leading authority on the philosophy of Wittgenstein. He has specialized in philosophy and cognitive neuroscience. He has written a four-volume tetralogy on human nature of which three have been published.
“To this day, the revised edition of Insight and Illusion is probably the best single book on Wittgenstein.” —Professor Hans-Johnann Glock, University of Zurich “This book on Wittgenstein’s early to late thought is invaluable for anyone wishing to understand the ideas of this great philosopher.”—Professor Hanoch Ben-Yami, Central European University