Abba Theonas begins to introduce Cassian and Germanus to a deeper understanding of Theoria, that is, contemplation.  In particular, he makes it clear that even though the virtues are good and precious, they are nonetheless obscured upon comparison with the brilliance of the contemplation of God Himself.  Such contemplation is identifiable with purity of heart and even those who live a life of great perfection can fall, albeit unwillingly, from it due to distraction.  While not equivalent to grave sin, this distraction is due to the Fall and those who are aware of the sinfulness and poverty grieve over it.  Holy persons realize and are conscious of the great failure to cling to contemplation and repent and make reparation for it.  Such, however, cannot be said of the sinner who willingly enters into his crimes.  Despite our tendency to describe such things as "falls", a person willingly embraces their sin and is desirous of it; even overcoming every obstacle to attain it.  What is held before us then in this Conference is the height of contemplation that we are called to by grace and the pervasiveness of sin that must be struggled against even when the heights of perfection are attained.