(This was read from The Philokalia Vol.1 this is part of The Institutes)
Cassian’s short essays do an excellent job of diagnosing and giving remedy to 8 vices. Cassian’s explanations are deeply rooted in scripture and has many practical applications. This is a difficult, but rich read. My basic summary is that Cassian is strong advocate for intentional Godly community and for God’s grace and mercy that empowers our climb to holiness. There are a few things that I might disagree with Cassian on, but overall a great work that more people should read.
(Also if you decide to read this remember that it is written for Monks)