We know the utility of prayer from the efforts of the wicked spirits to distract us during the divine office; and we experience the fruit of prayer in the defeat of our enemies.
John ClimacusWhen the soul betrays itself and loses the blessed and longed-for fervor, let it carefully investigate the reason for losing it. And let it arm itself with all its longing and zeal against whatever caused this. For the former fervor can return only through the same door through which it was lost.
John ClimacusThose who submit to the Lord with simple heart will run the good race. If they keep their minds on a leash, they will not draw the wickedness of the demons onto themselves.
John ClimacusEven though one is well advanced in virtue, should he stop mortifying himself, he soon would lose his modesty and virtue - just as fertile soul quickly becomes dry and arid and produces nothing but thorns and thistles if it is not cultivated.
John Climacus