Gary Kemp

_Critical Thinking_ is a much-needed guide to thinking skills and above all to thinking critically for oneself. Through clear discussion, students learn the skills required to tell a good argument from a bad one. Key features include: *jargon-free discussion of key concepts in argumentation *how to avoid confusions surrounding words such as 'truth', 'knowledge' and 'opinion' *how to identify and evaluate the most common types of argument *how to spot fallacies in arguments and tell good reasoning from bad *topical examples from politics, sport, medicine, music *chapter summaries, glossary and exercises _Critical Thinking_ is essential reading for anyone, student or professional, seeking to improve their reasoning and arguing skills.

Quine’s naturalism has no room for a point of view outside science from which one might criticize science, or a transcendental point of view from which one could ask questions about the adequacy of science with respect to reality (‘as it is in itself ’). Adrian Moore sniffs out some genuine tensions in this, arguing in effect that Quine is forced by his own views to admit those sorts of questions as legitimate. I venture that Quine, even if he would grant that the posing of such questions is an inevitable feature of reason in some sense, would take such curiosity to be strictly speaking a mistake, something like that of thinking there must be a single truth-predicate for all levels of Tarski’s hierarchy.

Both Russell and Frege were inclined to think that there is nothing essentially linguistic about thought: any actual reliance of ours upon language is a mere psychological contingency. If so then it should be possible to formulate logic in such a way that logical relationships are not represented or expressed as principles pertaining to linguistic forms. Russell and Frege take pains to achieve this, but fail. I explain this by looking at some features of Grundgesetz and Principia . Their failure, I suggest, is due to the nature of the case.