Robert Levin

Self - Narrator (voice)

Najeeb Michaeel

Self - Dominican Monk

Columba Stewart

Self - Benedictine Monk

Chiara Raimondo

Self - Archaeologist

Stephen Greenblatt

Self - Literature Scholar

Letizia Mandate

Self - Greek Culture Scholar

Vito Mocella

Self - Optical Engineer

Mustafa Jahie

Self - Librarian

Andrea Dautović

Self - Librarian

Enver Imamovíc

Self - Archaeologist

Patriarch John X of Antioch

Self - Greek Orthodox Patriarch

Elisabetta Lugato

Self - Librarian

Brezzano Maximum

Self - Book Restorer

Patriarch Gregory Peter XX of Cilicia

Self - Armenian Catholic Patriarch

Zubin Mehta

Self - Conductor (archive footage)