I'm using a plan that has me reading through 10 of the Church Fathers during Lent this year. Yesterday was St. Cyprian: On the Unity of the Church: 1-9. I'm catching up.

This style of writing is different than what I've been reading lately, so it took a little bit to get into it. Seems to be some pretty straightforward writing about the history of the church and how everything should generally work together. I'll probably have to read this again later to get a better understanding.