The one real objection to the Christian religion is simply that it is one religion. The world is a big place, full of very different kinds of people. Christianity (it may be reasonably said) is one thing confined to one kind of people…I was thoroughly annoyed with Christianity for suggesting (as I supposed) that whole ages and empires of men had utterly escaped this light of justice and reason. I found that the very people who said that mankind was one church from Plato to Emerson were the very people who said that morality had changed altogether, and that what was right in one age was wrong in another…I found it was their daily taunt against Christianity that it was the light of one people and had left all others to die in the dark. But I also found that it was their special boast for themselves that science and progress were the discovery of one people, and that all other peoples had died in the dark. Their chief insult to Christianity was actually their chief compliment to themselves, and there seemed to be a strange unfairness about all their relative insistence on the two things.
–G.K. Chesterton, Orthodoxy (pp. 79-80)