In Books 1–4 of "Institutions", Cassian discusses clothing, prayer and rules of monastic life. Books 5–12 are rules on morality, specifically addressing the eight vices – gluttony, lust, greed, hubris, wrath, envy, listlessness, and boasting – and what to do to cure these vices. In the "Institutions", Cassian discusses a will that is more complex than the will at the heart of the Pelagian message. Willful monks are a contentious problem, and Cassian paid considerable attention to analyzing the will, treating the corrupt will, and chiefly subordinating even the good will for the good of the community and ultimately, the will of God.