Manlio Simonetti was born in Rome on 2nd May 1926. In June 1947 he graduated Classical Letters at the University of Rome “La Sapienza”. He is professor of Christian Ancient Literature at the University of Cagliari from 1959, professor of History of Christianity at the University of Rome “La Sapienza” from November 1969, and Professor emeritus in the same University from 2001. From 1970, he is professor at the Augustinian Patristic Institute of Rome. Member of the academy Accademia dei Lincei, from 1977, he is member of the Pontifical Academy of Archaeology, the Société des Bollandistes, the Società Romana di Storia Patria, the Academy of Science, Letters and Arts of Naples. Among his books there are: the critical edition of the Opera by Rufinus of Aquileia CCL XX (1061); the critical edition of Cyprianus ad Donatum, ad Demetrianum; de mortalitate, de opere et eleemosynis, de zelo et livore CCL IIIa (1976); “Gnostic texts in Greek and Latin” (1993); Saint Augustine De doctrina Christiana (1994), Origen “Homilies on the Song of Songs” (1998), Gregory The Great, “Dialogues” (two volumes), Flavius Josephus “Antiquities of the Jews”, books XII-XX, from Alexander the Great to Nero (2002).
He also wrote monographs and articles: Studi sull'innologia popolare cristiana dei primi secoli, (1952); Studi agiografici, (1955); Studi sull'arianesimo, (1965); La crisi ariana, (1975); Studi sulla cristologia del II e III secolo, (1993); Storia della letteratura cristiana antica, (1999) and many others. During his precocious career - he became extraordinary in 1959 at 31 years old- the activity of Prof. Manlio Simonetti was concentrated on cultural management because he was director of important scientific book collections (La Biblioteca patristica, la Corona Patrum) and editorial initiatives (as, for example: L’Enciclopedia dei Papi, by Treccani publishing company). He is also President of the Unione Accademica Nazionale.