Possibilia, Qualia, and Sensibilia

In this article I shall first and foremost attempt to show that the semantic requirements of Wittgenstein’s Tractatus logico-philosophicus intend the objects of the Tractatus to be conceived of as possibilia in the Russellian sense of 1903, i.e., as objects that may exist or may not exist; secondly, that the general ontology of the Tractatus suggests integrating this onto-semantic conception with a conception of these objects not properly as qualia but as sensibilia in the Russellian sense of 1914, i.e., as sense-data that may exist or may not exist.