“... together with their total impermeability to others, would require a study focused not on the 17 years of Ricci’s China mission but on a much longer period. It is a study of this latter kind which JacquesGernet has provided in his Chine et Christianisme, a book which seems to have appeared just too late for Spence to use it. Gernet deals with the period from Ricci’s arrival in China to the late ...”