...whoever is guided solely by his own judgment and decision will never climb up to the summit of perfection and will not fail to be the victim of the devil's ruinous power to delude.
John CassianWe must, with God's help, eradicate the deadly poison of the demon of anger from the depths of our souls. So long as he dwells in our hearts and blinds the eyes of the heart with his somber disorders, we can neither discriminate what is for our good, nor achieve spiritual knowledge, nor fulfill our good intentions, nor participate in true life; and our intellect will remain impervious to the contemplation of the true, divine light; for it is written, 'Man's anger does not bring about the righteousness of God' (Jms. 1:20).
John Cassian[God] arranged that the boy Samuel should be chosen but instead of teaching him directly He had him turn once or twice to an old man. This youngster, to whom He had granted a direct encounter with Himself, had nevertheless to go for instruction to someone who had offended God, and all because that person was an old man. He decided that Samuel was most worthy of a high calling and yet He made him submit to the guidance of an old man so that once summoned to a divine ministry he might learn humility and might himself become for all the young a model of deference.
John Cassian...we should realize that there are three sources for our thoughts - God, the devil, and ourselves.
John CassianHumility, in its turn, can be achieved only through faith, fear of God, gentleness and the shedding of all possessions.
John CassianFasts and vigils, the study of Scripture, renouncing possessions and everything worldly are not in themselves perfection, as we have said; theyare its tools. For perfection is not to be found in them; it is acquired through them. It is useless, therefore, to boast of our fasting, vigils, poverty, and reading of Scripture when we have not achieved the love of God and our fellow men. Whoever has achieved love has God within himself and his intellect is always with God.
John Cassian