Different conceptions of cognitive authority in library and information science (LIS) obscure best practice for functions of the profession, such as information literacy instruction, that derive from how authority is understood. Some of these conceptions, such as a normative conception of authority, are prominent but not grounded in theory. Accordingly, this paper examines the work of Wilson (1983) and Kierkegaard (1813-1855) in hopes of reminding the profession of its most rigorously articulated formulations of authority. A more critical understanding of this concept is necessary for practice that speaks to the reality of a context bifurcated by adherence to competing authorities.