From the Amazon description contained on Henry Chadwick's work on this text:
"Sextus's Sentences are a collection of ethical aphorisms which for centuries were read in Latin, Greek, Syriac and Armenian, by Christians from Britain to Mesopotamia. Who 'Sextus' was, and whether he was a Christian, is not certain… [T]he Sentences, probably written in the second century, were widely read in Jerome's time, and were still treated as authoritative in the Middle Ages. They are an important strand in the history of the development of Christian ethics and are yet another example of that dialogue between the Greek and the Jewish which so profoundly affected the development of the young religion. …"
Amazon link to SBL's edition (with English translation) of the text.
Link to SBL's publicly available PDF of the text.