By David Carlin, The Catholic Thing - In the first few centuries of the Christian era, there was a widespread belief – perhaps I should say, feeling – in the Roman Empire that there was something fundamentally wrong with the world (by “world” I mean “universe”). For many, the practical implication of this belief was that we should adopt an attitude of rejection of the world. Accordingly, a number of popular religions of the time were world-rejecting religions – for example, Mithraism, Manicheism, and other varieties of Gnosticism.