Necessary prices and necessary income distribution in classical political economy. A bridge with the notion of 'just' prices and 'just' wages

Production prices are those exchange-values which, if adopted, put each industry in the conditions to repeat its production process. In this sense they appear as necessary prices. This notion is here compared with that of ‘just’ price, studied by the older moral philosophers (more so than by economists). Production prices appear thus as that concept that comes closer to the notion of just price. On similar grounds, some recent results, which have emerged within the classical and post-Keynesian approaches, have been employed here to envisage the elements that characterize a ‘necessary’ income distribution configuration and a ‘necessary’ level of the rate of interest.