31 And as history receives its conclusions, ready-made, from philosophy, so too criticism takes its own from history. The critic, on the data furnished him by the historian, makes two parts of all his documents. Those that remain after the triple elimination above described go to form the real history; the rest is attributed to the history of the faith or as it is styled, to internal history. For the Modernists distinguish very carefully between these two kinds of history, and it is to be noted that they oppose the history of the faith to real history precisely as real. Thus we have a double Christ: a real Christ, and a Christ, the one of faith, who never really existed; a Christ who has lived at a given time and in a given place, and a Christ who has never lived outside the pious meditations of the believer - the Christ, for instance, whom we find in the Gospel of St. John, which is pure contemplation from beginning to end.
Source: Pascendi Dominici Gregis (Vatican.va)