Ayaana as a system of classification and an organizing principle of Oromo cosmology establishes the connection between Waaqa (the Creator/God) and the created (nature and society) by differentiating and at the same time uniting the created things and the Creator (Kassam, 2007). The Oromo believe that Waaqa, the Supreme Being, created ayaana and uses it to organize scattered things into order. As Gemetchu Megerssa (1993: 95) explains, “ayaana is the mechanism by which the creator propels itself into becoming its own opposite, and dwells in that which it creates. This is then transposed to explain the basic principles that embed themselves in the diverse Oromo institutions, since there is no distinction between the laws of thought, the laws of nature, history and society.” The concept uuma includes everything created by Waaqa including ayaana. Safu is an ethical and moral “code that Oromos use to differentiate bad from good and wrong from right . . . [S]afu `constitutes the ethical basis upon which all human action should be founded; it is that which directs one on the right path; it shows the way in which life can be best lived’” (Megerssa, 1993: 255).