Last Writings on the Philosophy of Psychology - The Inner and the Outer, 1949 - 1951, Volume 2

In the last years of his life, from 1949 to 1951, Wittgensteina s writings focused upon knowledge and certainty (collected together in On Certainty), upon colour concepts (in Remarks on Colour) and upon the relation between the "inner" and "outer", that is, between so--called mental states and bodily behavior.