Ammianus Marcellinus relates an anecdote of the Emperor Julian which illustrates the enforcement of this principle in the Roman law. Numerius, the governor of Narbonensis, was on trial before the Emperor, and, contrary to the usage in criminal cases, the trial was public. Numerius contented himself with denying his guilt, and there was not sufficient proof against him. His adversary, Delphidius, "a passionate man," seeing that the failure of the accusation was inevitable, could not restrain himself, and exclaimed, "Oh, illustrious Caesar! if it is sufficient to deny, what hereafter will become of the guilty?" to which Julian replied, "If it suffices to accuse, what will become of the innocent?" Rerum Gestarum, L. XVIII, c. 1. The rule thus found in the Roman law was, along with many other fundamental and humane maxims of that system, preserved for mankind by the canon law. Decretum Gratiani de Presumptionibus, L. II, T. XXIII, c. 14, A.D. 1198; [***492] Corpus Juris Canonici Hispani et Indici, R.P. Murillo Velarde, Tom. 1, L. II, n. 140.