See, they say, how they love one another, for themselves are animated by mutual hatred; how they are ready even to die for one another, for they themselves will sooner put to death.
Vide, inquiunt, ut invicem se diligant; ipsi enim invicem oderunt: et ut pro alterutro mori sint parati; ipsi enim ad occidendum alterutrum paratiores erunt.
Original text (Latin)
Notes from Wikiquote
Chapter 39, describing how Christianity is mocked by its enemies.