Those who reach the goal without falling do so through hating themselves and all worldly desires, distractions, pleasures and preoccupations, for this is what ‘denying oneself’ amounts to. Hence everyone expels himself from the kingdom by his own choice, through not embracing suffering and denying himself for the sake of the truth, but wanting to enjoy something of this world in addition to that divine longing, and not surrendering the whole inclination of his will to God.
— Saint Symeon Metaphrastis (Tenth Century)