In this third installment of his classic 'Foundations' trilogy, Michel Serres takes on the history of geometry and mathematics. Even more broadly, Geometry is the beginnings of things and also how these beginnings have shaped how we continue to think philosophically and critically. Serres rejects a traditional history of mathematics which unfolds in a linear manner, and argues for the need to delve into the past of maths and identify a series of ruptures which can help shed light on how this discipline has developed and how, in turn, the way we think has been shaped and formed. This meticulous and lyrical translation marks the first ever English translation of this key text in the history of ideas. This fine new translation of Michel Serres' third book of foundations, Geometry, shows him combining the concerns of his earlier work, on Lucretius and Leibniz, with the historical, mythological, and cultural themes prominent in the two previous books, Rome and Statues. Here he explores how innovation requires a return to a pre-history, before the installation of a current regime of inquiry, and he thus identifies multiple origins for geometry. For those new to his work, this text provides an excellent introduction to the sheer range and exhilaration of his thinking. For those already intrigued, if puzzled, it provides indispensable linkages and insights into the distinctive and inimitable logic of his inquiries, in which the notion of 'foundation' itself undergoes a surprising metamorphosis.