We have indeed six books of Saint Hilary, Bishop of Pictavia, which he turned into Latin from the Greek of Origen: but he has not expounded the whole of the book of holy Job in order. And I am not a little surprised that a man so very learned and so holy should translate the silly tales of Origen about the stars. I, most holy father, can in no way be persuaded to believe that the heavenly luminaries are rational spirits, Holy Scripture not declaring them to have been made either along with angels or along with men. Let then your Blessedness deign to transmit to my littleness not only this work, but also the other books on morals which in this Book of Rules you speak of having composed. For we are yours, and are delighted to read what is yours. For to me it is a desirable and glorious thing, as your Gregory says, to learn even to extreme old age. May God the Holy Trinity vouchsafe to preserve your crown unharmed for instructing His Church, as we hope, most blessed father.
Source: Register of Letters (New Advent)