[140] [cap.35] And the scripture says that, "he shall not die who offers abstemious sacrifices;" since ignorance brings death, and education and instruction bring immortality. For as in our own bodies disease is the cause of dissolution, and health of preservation; so in the same manner in our souls also, that which saves is prudence, for this is a kind of good health of the mind; and that which destroys is folly, which inflicts an incurable disease.