"He has fallen away from God, who is the fullness of everything. He is empty in himself. The only thing that remains is to spread himself among the endless variety of things and to live through them. So a sinner is thirsty, anxious, and troubled about many and various things which are apart from himself and apart from God. That is why the characteristic feature of a sinful life, when one is neglectful of his salvation, is an anxiety and trouble about many things (Luke 10:41)."
- St. Theophan the Recluse, Turning the Heart to God, p. 6 (published separately, this is the second part of The Path to Salvation).