 Reinhold introduced his presentation of the Elementary Philosophy with the following “metaphilosophical” questions: How is philosophy possible as a strict science, and what is the distinguishing feature of such a science? Following Kant, as well as the entire rationalist tradition, Reinhold maintained that the essence of science lies in universality and necessity. But these are properties of thought, not of sensation or intuition. Only through thinking and judging can we recognize universality and necessity, a recognition that is, in turn, formulated and expressed in concepts and propositions. The business of philosophy is therefore to establish “universally valid” [allgemeingültig] propositions in a manner that allows their necessity and universality to be universally recognized as binding upon everyone [allgemeingeltend]. This last requirement reveals the intimate link between Reinhold’s earlier efforts at “popularizing” the Kantian philosophy and his subsequent efforts to expand and to ground this same system. One of the constant hallmarks of Reinhold’s philosophical efforts was his conviction that a genuinely scientific philosophy must be capable of being understood and recognized as true by everyone.