more from Michael Morris

Single Idea 23484

[catalogued under 5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence]

Full Idea

According to the Principle of Bipolarity, every meaningful sentence must be capable both of being true and of being false. It is not enough merely that every sentence must be either true or false (which is Bivalence).

Gist of Idea

Bipolarity adds to Bivalence the capacity for both truth values


Michael Morris (Guidebook to Wittgenstein's Tractatus [2008], 3D)

Book Reference

Morris,Michael: 'Guidebook to Wittgenstein's Tractatus' [Routledge 2008], p.133

A Reaction

It is said that early Wittgenstein endorses this. That is, in addition to being true, the sentence must be capable of falsehood (and vice versa). This seems to be flirting with the verification principle. I presume it is 'affirmative' sentences.