4 surviving letters between Calliopius and Libanius, spanning 333-364 AD.
So at last you write -- though it took some prompting.
I send you these small tokens not because they match the scale of my affection -- nothing could -- but because they...
I write to you in good health, though "good" is a relative term at my age and in these times.
The pleasure I would have felt if you were governing Syria, I feel now that you are governing cities I hold equal to...