Authors
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.

Themes in the Philosophy of Wittgenstein, 3rd Edition
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.