If you praise your neighbor to one man and criticize him to another, you are the slave of self-esteem and jealousy. Through praise you try to hide your jealousy, through criticism to appear better than your neighbor.
The passage argues that contradictory behavior toward the neighbor is the primary psychological symptom of self-esteem and envy, exposing the soul’s hidden disorder.
, The Philokalia, Volume 4, 1995thesis