While we hope that the present edition will be useful to specialists, its primary intention is to present to the larger public the information we possess concerning early Greek philosophy. We have explicitly addressed problems of interpretation only to a small extent. There are few notes, and they are limited to factual information or indispensable clarifications. Our own understanding of the texts and problems is presented most often implicitly, not only in our translations but also by the way we have selected, configured, put into sequence, and introduced the texts with section titles. In the case of certain questions that are particularly controversial (for example, whether there was one poem of Empedocles or two, or one Antiphon or more), we have done our very best, without concealing our own position, to present the data openly and fairly. Our detailed justifications may well be supplied in later publications. As a general rule, the introduction to each of the chapters restricts itself to briefly situating, in temporal and doctrinal terms, the author or corpus in question, to indicating the fundamental editions or studies in which readers will be able to find more information, and to reproducing, last but not least, the complete outline of the titles and subtitles of that chapter, as a guide to reading it. In certain cases, the difficulties connected with the translation of an