ABSTRACT
To follow up properly so complete a transformation of human psychology would require the help of fine, accurate and copious evidence. Unfortunately our documents are poor, frag mentary and uncertain. Faced with 44 the most difficult problem of history ” the historian feels cruelly inadequate for his task. In order not to abandon it and to soothe his uneasy or tortured conscience, he will have to remember always the greatness of the end he has before him and also the fact that excessive humility should not prevent us from serving at the altar.
