"Nafs" (self or ego) is the aspect of the psyche that can be viewed along a continuum, and has the potential of functioning from the grossest to the highest level. The self at its lowest level refers to our negative traits and tendencies, controlled by emotions, desires and its gratification. Sufic psychology identifies seven levels of the nafs, which have been identified in the Quran.[2] The process of growth depends on working through these levels.