We are but of yesterday, and we have filled every place among you – cities, islands, fortresses, towns, market-places, the very camp, tribes, companies, palace, senate, forum – we have left you nothing but the temples of your gods … if such multitudes were to break away from you, and betake themselves to some remote corner of the world, why, the very loss of so many citizens, whatever sort they were, would cover the empire with shame … you would be horror-struck at the solitude in which you would find yourselves, at such an all-prevailing silence, and the stupor as of a dead world. You would have to seek subjects to govern. You would have more enemies than citizens remaining. For now it is the immense number of Christians which make your enemies so few – almost all the inhabitants of your various cities being followers of Christ.
Tertullian (155-220)
…from an open letter to the Roman Senate