Abstract

In the very early Notebooks 1914‐1916, Ludwig Wittgenstein's principal interests were in logic, but his remarks are scattered through with occasional observations or sequences of observations about epistemology, solipsism, life, and other metaphysical subjects. The Tractatus was published in 1921. Here, as in the Notebooks, Wittgenstein is convinced that there must be elementary propositions, propositions that cannot be analyzed, because they are not composed by applying truth functions to other propositions. The metaphysical structure of the Tractatus began to disintegrate, however, when Wittgenstein realized, as he reported in “Some Remarks on Logical Form”, that he could not analyze propositions about colors as statements of degree. Wittgenstein had begun to replace the idea of a logical space with “logical grammar”, a conception that was in turn destined to be replaced by “language‐games”. He wrote, “The colour octahedron is grammar, since it says that you can speak of a reddish blue but not a reddish green, etc”.