Saint John Climacus. "The Ladder of Divine Ascent". Step 23.
Pride is a denial of God, an invention of the devil, contempt for men. It is the mother of condemnation, the offspring of praise, a sign of barrenness. It is a flight from God's help, the harbinger of madness, the author of downfall. It is the cause of diabolical possession, the source of anger, the gateway of hypocrisy. It is the fortress of demons, the custodian of sins, the source of hardheartedness. It is the denial of compassion, a bitter pharisee, a cruel judge. It is the foe of God, It is the root of blasphemy.
Pride begins where vainglory leaves off. Its midpoint comes with the humiliation of our neighbor, the shameless parading of our achievements, complacency, and unwillingness to be found out. It ends with the spurning of God's help, the exalting of one's own efforts and a devilish disposition.
Listen, therefore, all who wish to avoid this pit. This passion often draws strength initially from the giving of thanks, and at first it does not shamelessly urge us to renounce God. I have seen people who speak aloud their thanks to God but who in their hearts are glоrifying themselves, something demonstrated by that Pharisee with his "O God, I thank You" (Luke 18:11).
Pride takes up residence wherever we have lapsed, for a lapse is in fact an indication of pride. And an admirable man said once to me: "Think of a dozen shameful passions. Love one of them, I mean pride, and it will take up the space of all the other eleven."
A proud monk argues bitterly with others. The humble monk is loath to contradict them.
The cypress tree does not bend to the ground in order to walk, nor does the haughty monk in order to gain obedience.