Letter 56
1. I have not forgotten my promise and your desire. But because I was gone due to the need to visit the churches that fall under my care, I could not by myself immediately repay my debt, yet I nonetheless did not want to owe you for a longer time what I could have repaid since I had it. Hence, I appointed my dearest son, the presbyter Optatus, to read with you at those hours that you thought more convenient those materials that I promised. He thinks that he can do all this, and Your Excellency will persuade him to do it more promptly and quickly, the more you welcome it with gratitude. [...]
(trans. R. Teske, slightly modified)