XI. And now, having purified the theatre by what has been said, let us discourse a little about the Festival, and join in celebrating this Feast with festal and pious souls. And, since the chief point of the Festival is the remembrance of God, let us call God to mind. For I think that the sound of those who keep Festival There, where is the dwelling of all the Blissful, is nothing else than this, the hymns and praises of God, sung by all who are counted worthy of that City. Let none be astonished if what I have to say contains some things that I have said before; for not only will I utter the same words, but I shall speak of the same subjects, trembling both in tongue and mind and thought when I speak of God for you too, that you may share this laudable and blessed feeling. And when I speak of God you must be illumined at once by one flash of light and by three. Three in Individualities or Hypostases, if any prefer so to call them, or persons, for we will not quarrel about names so long as the syllables amount to the same meaning; but One in respect of the Substance—that is, the Godhead. For they are divided without division, if I may so say; and they are united in division. For the Godhead is one in three, and the three are one, in whom the Godhead is, or to speak more accurately, Who are the Godhead. Excesses and defects we will omit, neither making the Unity a confusion, nor the division a separation. We would keep equally far from the confusion of Sabellius and from the division of Arius, which are evils diametrically opposed, yet equal in their wickedness. For what need is there heretically to fuse God together, or to cut Him up into inequality?