Cassian begins with a rather dense discussion of the nature of the desires of the flesh and the spirit. While rather challenging to follow, the payoff in regards to clarity is great. The struggles between the flesh and the spirit create a kind of equilibrium for the will that prevent us from falling into excess. The desires of the flesh are limited by spiritual fervor and the ascetic disciplines and the desires of the spirit are balanced by the limits of human nature. We are prevented from simply doing "what we want to do" and the internal struggle that is an ever present reality leads us to discretion and obedience. Discussion ensued about how we often seek to anesthetize ourselves to this struggle and inner dis-ease and characterize it as frustrating or something to be limited. Rather it has been given to us by God as something which is beneficial and keeps us on the path of humble self discipline and reliance on the grace of God.