The main objective of Cambridge Texts in the History of Philo- sophy is to expand the range, variety, and quality of texts in the history of philosophy which are available in English. The series includes texts by familiar names (such as Descartes and Kant) and also by less well-known authors. Wherever possible, texts are published in complete and unabridged form, and translations are specially commissioned for the series. Each volume contains a critical introduction together with a guide to further reading and any necessary glossaries and textual apparatus. The volumes are designed for student use at undergraduate and postgraduate level, and will be of interest not only to students of philosophy, but also to a wider audience of readers in the history of science, the history of theology, and the history of ideas.