If we love our enemies, there will be no place in our souls for pride, for in Christ-like love no one ranks above another.

St. Silouan the Athonite

O, how needful it is that we entreat the Lord to give the soul His humble Holy Spirit! The lowly soul enjoys great peace, while the proud soul is a torment to herself.

St. Silouan the Athonite

The proud man thinks he can comprehend everything with his mind, but God does not grant this.  But we know the Lord:  He has made Himself manifest to us in the Holy Spirit, and the soul knows and is joyful and at ease, and in this lies our hallowed life.

St. Silouan the Athonite

Repentance must be the soul of prayer, without which prayer is dead, stinking with proud and seductive conceit!  Repentance is the only door through which one can obtain from our Lord the saving pasture.  He who neglects repentance is bereft of all grace...  The merciful Lord prepared the way for our divine heavenly eternal Kingdom, showed the door through which we might enter into the salvic pasture of the Holy Spirit and Truth, the door of repentance.  If we neglect to repent, without any doubt, we will remain outside the door.  Good deeds, natural in feeling, will in no way replace repentance.

St. Ignatius Brianchaninov

Virtues are formed by prayer. 

Prayer preserves temperance. Prayer suppresses anger. Prayer prevents emotions of pride and envy. 

Prayer draws into the soul the Holy Spirit, and raises man to Heaven.

St. Ephraim of Syria

To judge sins is the business of one who is sinless, but who is sinless except God? Who ever thinks about the multitude of his own sins in his heart never wants to make the sins of others a topic of conversation. To judge a man who has gone astray is a sign of pride, and God resists the proud. On the other hand, one who every hour prepares himself to give answer for his own sins will not quickly lift up his head to examine the mistakes of others.

St. Gennadius of Constantinople

These eight passions should be destroyed as follows: gluttony by self-control; unchastity by desire for God and longing for the blessings held in store; avarice by compassion for the poor; anger by goodwill and love for all men; worldly dejection by spiritual joy; listlessness by patience, perseverance and offering thanks to God; self-esteem by doing good in secret and by praying constantly with a contrite heart; and pride by not judging or despising anyone in the manner of the boastful Pharisee (cf. Luke 18 : 11–12), and by considering oneself the least of all men. When the intellect has been freed in this way from the passions we have described and been raised up to God, it will henceforth live the life of blessedness, receiving the pledge of the Holy Spirit (cf. 2 Cor. 1 : 22). And when it departs this life, dispassionate and full of true knowledge, it will stand before the light of the Holy Trinity and with the divine angels will shine in glory through all eternity.

St John of Damascus 

Courageousness of heart, and scorning every danger, come from one of two causes: either they are due to hardness of heart, or from an abundant faith in God. The former is accompanied by pride, the latter by humility of heart.

St. Isaac of Syria 

We advance toward humility by means of trials. He who rests on his virtue without suffering tribulations has the door of pride open before him.

St. Isaac of Syria