Even a pious person is not immune to spiritual sickness if he does not have a wise guide -- either a living person or a spiritual writer. This sickness is called prelest, or spiritual delusion, imagining oneself to be near to God and to the realm of the divine and supernatural. Even zealous ascetics in monasteries are sometimes subject to this delusion, but of course, laymen who are zealous in external struggles (podvigi) undergo it much more frequently. Surpassing their acquaintances in struggles of prayer and fasting, they imagine that they are seers of divine visions, or at least of dreams inspired by grace. In every event of their lives, they see special intentional directions from God or their guardian angel. And then they start imagining that they are God's elect, and often try to foretell the future. The Holy Fathers armed themselves against nothing so fiercely as against this sickness -- prelest.
Stint your stomach and you will certainly lock your mouth, because the tongue is strengthened by an abundance of food. Struggle with all your might against the stomach and restrain it with all sobriety. If you labor a little, the Lord will also soon work with you.
Do not be surprised that you fall every day; do not give up, but stand your ground courageously. And assuredly, the angel who guards you will honor your patience.
Remember me, ye heirs of God, ye brethren of Christ, supplicate the Saviour earnestly for me, that I may be freed though Christ from him that fights against me day by day.
I consider those fallen mourners more blessed than those who have not fallen and are not mourning over themselves; because as a result of their fall, they have risen by a sure resurrection.
Waves of temptation of every sort were aimed at the righteous ones, but they did not grow faint. Glory did not make them haughty, nor did abusive treatment cause them to be despondent. They were always the same; never did the fragrance of their virtues falter.
Greater than baptism itself is the fountain of tears after baptism, even though it is somewhat audacious to say so. For baptism is the washing away of evils that were in us before, but sins committed after baptism are washed away by tears. As baptism is received in infancy, we have all defiled it, but we cleanse it anew with tears. And if God in His love for mankind had not given us tears, those being saved would be few indeed and hard to find.
Do you wish God to hear your prayer immediately, brother? When you lift your hands up to heaven, pray first of all, with your heart, for your enemies and God will grant you speedily whatever else you request.
I wish I could persuade spiritual persons that the way of perfection does not consist in many devices, nor in much cogitation, but in denying themselves completely and yielding themselves to suffer everything for the love of Christ. And if there is failure in this exercise, all other methods of walking in the spiritual way are merely a beating about the bush, and profitless trifling, although a person should have very high contemplation and communication with God.
As the gradual pouring of water on a fire completely extinguishes the flame, so the tears of mourning are able to quench every flame of anger and irritability. Therefore, we place this next in order. (after mourning).
