This new critical edition of Dissoi Logoi starts from a codicological analysis that is unprecedented in scope (the studied codices are twenty-six) and depth (their material, dimensions, transmitted works, provenance, date, scribe, first possessors, and current place of conservation are considered). On this basis, a new stemma codicum and a new Greek critical text with parallel English translation are offered. The extensive introduction reconstructs the manuscript and printed transmission of the text and sheds new light on its nature and its reception in antiquity....