"Two different loves established two different cities: love of God, Jerusalem; love of the world, Babylon. Let each one ask kimself what he loves, and he will discover of which city he is a citizen. If he sees that he is a citizen of Babylon, let him uproot evil desires and implant charity within himself. If he finds he is a citizen of heavenly Jerusalem, let him endure his captivity and patiently await his deliverance". (On Ps 64.1)