Saul Kripke has thought uncommonly hard about the central argument of Wittgenstein's Philosophical Investigations and produced an uncommonly clear and vivid account of that argument...set out with all the clarity, incisiveness and economy that one expects of its author. (Times Literary Supplement )

Kripke's interpretation, and his arguments, deserve--and will repay--extremely careful attention. (Philosophical Books )

"Saul Kripke has thought uncommonly hard about the central argument of Wittgenstein's Philosophical Investigations and produces an uncommonly clear and vivid account of that argument ... clearly and compellingly presented ... an exemplary piece of exposition." Times Literary Supplement