He who has mastery over his incensive power has mastery also over the demons. But anyone who is a slave to it is a stranger to the ways of the Saviour, for as the Saviour enjoined us: 'Learn from Me; for I am gentle and humble in heart: and you will find rest for your souls' (Mt. 11:29). Now if a man abstains from food and drink, but becomes incensed to wrath because of evil thoughts, he is like a ship sailing the open sea with a demon for a pilot.
Evagrius PonticusIf your spirit still looks around at the time of prayer, then it does not yet pray as a monk. You are no better than a man of affairs engaged in a kind of landscape gardening.
Evagrius PonticusRemember how the Lord rebukes Martha when He says: 'You are anxious and troubled about many things: one thing alone is needful' (Lk. 10:41-42) ? to hear the divine word; after that, one should be content with anything that comes to hand.
Evagrius PonticusDo not be troubled if you do not immediately receive from God what you ask Him; for He desires to do something even greater for you, while you cling to Him in prayer.
Evagrius Ponticus