" The world then is the enemy of our souls; first, because, however innocent its pleasures, and praiseworthy its pursuits may be, they are likely to engross us, unless we are on our guard: and secondly, because in all its best pleasures, and noblest pursuits, the seeds of sin have been sown; an enemy hath done this; so that it is most difficult to enjoy the good without partaking of the evil also. "

― John Henry Newman , Works of John Henry Newman