### Single Idea 8472

#### [catalogued under 4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic]

Full Idea

Sentential logic has been proved consistent and complete; its consistency means that no contradictions can be derived, and its completeness assures us that every one of the logical truths can be proved.

Gist of Idea

Sentential logic is consistent (no contradictions) and complete (entirely provable)

Source

Alex Orenstein (W.V. Quine [2002], Ch.5)

Book Reference

Orenstein,Alex: 'W.V. Quine' [Princeton 2002], p.98

A Reaction

The situation for quantificational logic is not quite so clear (Orenstein p.98). I do not presume that being consistent and complete makes it necessarily better as a tool in the real world.