Many scholars have recently given their attention to the problem of formative influences on the life and thought of Ludwig Wittgenstein. Such attention is again expressed in the paper given this evening by Professor Toulmin. Kant, Schopenhauer, Bühler, Russell, Moore, psychologists of language: these references comprise but part of the list of proposed sources of influences and determination. In the present remarks, I want to direct your attention chiefly to the claims made by Professor Toulmin in this regard, and especially (...) to the evidence he offers for them. (shrink)