Against Celsus: Books 1-III:

Against Celsus (Greek: Κατὰ Κέλσου Kata Kelsou; Latin: Contra Celsum), preserved entirely in Greek, is a major apologetics work by the Church Father Origen of Alexandria, written in around 248 AD, countering the writings of Celsus, a pagan philosopher and controversialist who had written a scathing attack on Christianity in his treatise The True Word. Among a variety of other charges, Celsus had denounced many Christian doctrines as irrational and criticized Christians themselves as uneduca...