[...] For the two priests were talking exactly like priests,
piously, with learning and leisure, about the most aerial
enigmas of theology. The little Essex priest spoke the more
simply, with his round face turned to the strengthening stars;
the other talked with his head bowed, as if he were not even
worthy to look at them. But no more innocently clerical
conversation could have been heard in any white Italian cloister
or black Spanish cathedral. The first he heard was the tail of
one of Father Brown's sentences, which ended: "... what they
really meant in the Middle Ages by the heavens being
incorruptible." The taller priest nodded his bowed head and
said: "Ah, yes, these modern infidels appeal to their reason;
but who can look at those millions of worlds and not feel that
there may well be wonderful universes above us where reason is
utterly unreasonable?"
[ The Innocence of Father Brown, by G.K. Chesterton ]