Justin Martyr on the Trinity
Justin Martyr has a surprisingly developed understanding of Trinitarian doctrine for someone writing in the first half of the second century.
Description of Early Christians to Diognetus
I ran across this beautiful description of the early Christians in the Letter to Diognetus while reading the first volume of the Ante-Nicene Fathers. If only we could be true to this description, how much better salted would the world be by our presence?