From its constitution in the 17th century as the discipline of quantitative social relations, economics has tried to be a science similar to that of natura and for that reason, for some people, it appears as a “hard science.” To reach this goal, theoretic economists sought to build a natural...

This chapter inquires into what could or should be a Classical theory of money and prices sixty years after Sraffa's Production of Commodities by Means of Commodities' publication. It takes as granted three basic propositions: (i) Sraffa's system of prices is relevant for determining Classical...