 Of course, the discussions of verifiability in the late 1920s led to widespread disputes in later positivist thought. But even in the early years, Schlick and his students to wondered how ethical statements might be verifiable. In Problems of Ethics, Schlick attempted to interpret ethical statements as empirical claims about the means for maximizing happiness. Relying on relative judgments of values, Schlick argued that an empirical foundation of an ethical system based on maximum happiness. On Schlick’s account, happiness is not to be construed superficially but as the elated sense of fulfillment that accompanies actions carried out for their own sake. Hence, there are no apriori moral statements fixing absolute moral values.