Without calculation, economic activity is impossible. Since under Socialism economic calculation is impossible, under Socialism there can be no economic activity in our sense of the word All economic change, therefore, would involve operations the value of which could neither be predicted beforehand nor ascertained after they had taken place. Everything would be a leap in the dark. Socialism is the renunciation of rational economy.
Ludwig von MisesEconomics is not about things and tangible material objects; it is about men, their meanings and actions.
Ludwig von MisesThe only source from which an entrepreneurs profits stem is his ability to anticipate better than other people the future demand of the consumers.
Ludwig von Mises