 Certainly the friendship was never repudiated, and according to theologian Giovanni Gennari, Roncalli (who was assisted by Buonaiuti in saying his first Mass in 1904) is known to have used material written by the future excommunicate in teaching Church History.Historians generally agree that the association did not taint Roncalli's orthodoxy, even if he is known to have retained a certain regard for his erstwhile colleague.Indeed Cardinal Capovilla, who was secretary to John XXIII, attributes to his late superior the following sentiments