"(From the preface) Every one who has attempted to introduce students to the study of Philosophy by way of its history must have felt the need of having in compact form the most significant documents upon which the interpretations of that history are based, in order that it may be possible from the first to bring the student into direct contact with the sources, so far at least as that may be done through the medium of translations. The primary aim of this book is to supply this need. It is intended to serve either as a companion volume to any History of Philosophy that may be adopted as a text-book, or as a substitute for such a history where the instructor may prefer through his own lectures to give his own interpretation of this philosophical movement. It is hoped that the book may also, as a reference work, prove of value to students of philosophy generally, as well as to all who are interested in the development of ancient thought."--(PsycINFO Database Record (c) 2008 APA, all rights reserved).