« On a theoretical level he is one of those who made numerous efforts to turn codicology into an autonomous science » (Pierre Jodogne, « François Masai, codicologue », in Miscellanea Codicologica F. Masai, Dicata MCMLXXIX, Ghent, E. Story-Scientia,
1979, vol. I, p. XLIX.), as well as to establish a clear distinction between this codicology, the archaeology of books and fields such as paleography, epigraphy, papyrology, diplomatics etc.
As a professor in the history of the Middle Ages, the history of Byzantium and the history of christianity, as a specialist in monachism and a member of the board of directors of the review Byzantion, he forced himself « not to dissociate the history of ideas from the history of the texts expressing those ideas ».
In co-operation with Martin Wittek he supervised the execution and guaranteed the publication of the catalogues of dated manuscripts preserved in Belgium (1968-1972).
In 1959 he had encouraged Martin Wittek to create the
Bulletin codicologique which he associated with
Scriptorium.
Portrait : unknown photographer (DR).