The demons that oppose us

Of the demons opposing us in the practice of the ascetic life, there are three groups who fight in the front lines: those entrusted with the appetites of gluttony, those who suggest avaricious thoughts, and those who incite us to seek the esteem of men. All other demons follow behind and in the their turn attack those already wounded by the first three groups. For one does not fall into the power of the demon of unchastity, unless one has first fallen because of gluttony, nor is one's anger aroused unless one is fighting for food or material possessions or the esteem of men. And one does not escape the demon of dejection, unless one no longer experiences suffering when deprived of these things.
- Evagrios the Solitary; Texts on Discrimination 1