So long as worship of the Emperor as a God was required by law of all citizens, to become a Christian meant to become a criminal. In consequence, the Christians of the first four centuries A.D., subject like everyone else to the temptations of the Flesh and the Devil, had been spared the Temptations of the World. One could become a converted and remain a thorough rascal, but one could not be converted and remain a gentleman.
(W.H. Auden, in the Introduction to The Complete Poems of Cavafy