Fasts 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 CassianIf the kingdom of God is within us and that is a kingdom of justice, of peace, and of joy then whoever remains with these virtues is certainly in the kingdom of God. By contrast, all who deal in unrighteousness, in discord, and in death-bearing gloom have taken their stand in the kingdom of the devil, in hell and in lifelessness. It is by these tokens that the kingdom of God or of the devil is recognized.
John CassianLet everybody know this. He shall be assigned to the place and to the service to which he gave and devoted himself in this life and he can be sure that in eternity he will have as his lot the service and the companionship which he preferred in this life. This is what the Lord means when He says, 'If anyone is my servant let him follow Me and where I am he will be there as my servant' (Jn. 12:26).
John CassianTrue spiritual knowledge has sometimes flourished most grandly in some who were without eloquence and almost illiterate. And this is very clearly shown by the case of the Apostles and many holy men, who did not spread themselves out with an empty show of leaves, but were bowed down by the weight of the true fruits of spiritual knowledge: of whom it is written in Acts: 'But when they saw the boldness of Peter and John, and perceived that they were ignorant and unlearned men, they were astonished' (Acts 4:13).
John CassianGod can be sensed when we gaze with trembling hearts at that power of his which controls, guides, and rules everything, when we contemplate his immense knowledge and his knowing look which the secrets of the heart cannot evade.
John Cassian