Swete, Doctrine of the Holy Spirit, p. 71, who further notes:  “St. Jerome is severe upon St. Ambrose for copying Didymus, and says that the Archbishop of Milan had produced “ex Græcis bonis Latina non bona.’  The work of the Latin Father is, however, by no means a mere copy; and other writers besides Didymus are laid under contribution in the argument; e.g. St. Basil and perhaps St. Athanasius.”