80. Now I beseech you, holy brethren, to listen to my anxieties with indulgence. The Lord is my witness that in no matter do I wish to criticise the definitions of your faith, which you brought to Sirmium. But forgive me if I do not understand certain points; I will comfort myself with the recollection that the spirits of the prophets are subject to the prophets . Perhaps I am not presumptuous in gathering from this that I too may understand something that another does not know. Not that I have dared to hint that you are ignorant of anything according to the measure of knowledge: but for the unity of the Catholic faith suffer me to be as anxious as yourselves.