'...a carefull and scholarly discussion of the history and philosophy of geometry from the 1850's, marked by Riemann's generalized conception of space, and ending with Hilbert's axiomatics and Poincare's conventionalism at the beginning of the century.' The Modern Schoolman 'This is a deeply learned, scrupulously careful, very informative book which was well worth writing... In sum, Toretti has written carefully, with much insight, deep and broad learning, and sober judgement on a topic of profound difficulty and interest.' Australian Journal of Philosophy 'Torretti has written a very useful book which helps fill a large gap in the literature on the philosophy of mathematics.' The Philosophical Quarterly 'It delves into the contributions of many neglected writers and dispells myths concerning the contributions of others, which have too often been perpetuated in the philosophical literature... I suggest that it deserves to become a standard word.' Dialogue