Each of the six chapters in Truth, etc. derives from one of Barnes' John Locke Lectures, delivered in Oxford in 2004. For this publication, the lectures have evidently been much expanded. Even after the expansion, they retain an engagingly breezy style that helps to make them as easy to read as I fancy their originals were to hear.

Truth, etc. covers, in addition to truth, a miscellany of other topics: subjects and predicates; logical connectives, sentential and otherwise; the ways in which the validity of an argument depends on its form, and the ways in which the form of an argument might be described, or otherwise expressed; the prospects for demonstrative knowledge of logical matters; and whether logic should concern itself with an argument if no argument of that form could be used to prove something. Each topic falls, one way or another,...