 Following Neurath, Carnap explicitly opposed to the language of experience a narrower conception of intersubjective physicalist language which was to be found in the exact quantitative determination of physics-language realized in the readings of measurement instruments. Remember that for Carnap only the structural or formal features, in this case, of exact mathematical relations (manifested in the topological and metric characteristics of scales), can guarantee objectivity. Now the unity, objectivity and cognitive significance of science rested on the universal possibility of the translation of any scientific statement into physical language—which in the long run might lead to the reduction of all scientific knowledge to the laws and concepts of physics.