Naturalism in Mathematics
"Stylistically the book is an enjoyably readable and beautifully clear. In particular Maddy has a near-miraculous gift for explaining mathematical technicalities in a way that is comprehensible to the non-expert.  The book is therefore well worth reading not just for the new and bold philosophical position it promotes, but also as a philosopher's guide to what is going on in contemporary set theory."The Philosophical Review"Maddy's knowledge of early and contemporary set theory, and of philosophically significant parts of the history of mathematics generally, is impressively wide and deep, and her discussions of these matters are illuminating and rewarding.  She writes in a clear, forthright and challenging style. Her book is eminently readable, instructive, and thought-provoking."--The Journal of Symbolic Logic