this investigation, it will be of no help; because knowing is not a psychological state whose special characteristics explain all kinds of things. On the contrary, the special logic of the concept 'knowing' is not that of a psychological state. Although Remarks on Colour is considered difficult on account of its fragmentation, his last work, On Certainty (German: Über Gewissheit) is considered his most lucid. One resolution of this difficulty is that Remarks on Colour is really not fragmentary in nature, but a sustained and identifiable argument against the misleading view that colours are features of places in the visual field. Editions Ludwig Wittgenstein, Remarks on Colour, Oxford: Blackwell, 1977, ed. G. E. M. Anscombe and trans. Linda Schättle. References External links Google Books preview Ludwig Wittgenstein Books by Ludwig Wittgenstein Color