Blessed is he who like Joshua (cf. Josh. 10:12-13) keeps the Sun of righteousness from setting in himself throughout the whole day of his present life, not allowing it to be blotted out by the dusk of sin and ignorance. In this way he will truly be able to put to flight the cunning demons that rise up against him.
Maximus the ConfessorHe who devoutly strives to attain wisdom and is on his guard against the invisible powers, should pray that both natural discrimination - whose light is but limited - and the illuminating grace of the Spirit abide in him. The first by means of practice trains the flesh in virtue, the second illuminates the intellect so that it chooses above all else companionship with wisdom; and through wisdom it destroys the strongholds of evil and pulls down 'all the self-esteem that exalts itself against the knowledge of God' (II Cor. 10:5).
Maximus the ConfessorThe person who loves God cannot help loving every man as himself, even though he is grieved by the passions of those who are not yet purified. But when they amend their lives, his delight is indescribable and knows no bounds. A soul filled with thoughts of sensual desire and hatred is unpurified. If we detect any trace of hatred in our hearts against any man whatsoever for committing any fault, we are utterly estranged from love for God, since love for God absolutely precludes us from hating any man.
Maximus the ConfessorEvery genuine confession humbles the soul. When it takes the form of thanksgiving, it teaches the soul that it has been delivered by the grace of God.
Maximus the Confessor