This collection of fragments on epistemology, linguistic theory and Stoic logic is a complete compilation of the source material in accordance with the current state of research. A critical apparatus containing the versions relevant for the meaning and a parallel German translation have been added to the Greek and Latin as well as to the few Arabic and Armenian texts. There is often a short commentary as well. Detailed lists and a concordance to the collection of fragments by v. Arnim and Hülser as well as a longer introduction complete the collection.