As Christians, we cannot forget how Scripture speaks of the world, and all that appertains to it. Human Society, indeed, is an ordinance of God, to which He gives His sanction and His authority; but from the first an enemy has been busy in its depravation. Hence it is, that while in its substance it is divine, in its circumstances, tendencies, and results it has much of evil. Never do men come together in considerable numbers, but the passion, self-will, pride, and unbelief, which may be more or less dormant in them one by one, bursts into a flame, and becomes a constituent of their union. Even when faith exists in the whole people, even when religious men combine for religious purposes, still, when they form into a body, they evidence in no long time the innate debility of human nature, and in their spirit and conduct, in their avowals and proceedings, they are in grave contrast to Christian simplicity and straightforwardness. This is what the sacred writers mean by "the world," and why they warn us against it; and their description of it applies in its degree to all collections and parties of men, high and low, national and professional, lay and ecclesiastical.
[St. John Henry Newman, Sermon 14, "In the World, but not of the World".]