The intellect cannot be peaceful during prayer unless it has acquired self-control and love. With God’s help the first strives to put an end to the body’s hostility towards the soul, the second to our hostility towards our fellow-men. Upon the man who has in this way established peace within himself, ‘the peace that surpasses the intellect’ (Philippians 4:7) then descends and, according to God’s promise, takes up its abode in him.
~Ilias the Presbyter
Prayerful Life 