Ludwig von Mises Quote
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.
Socialism: An Economic and Sociological Analysis (ed. Lulu Press, Inc, 2015) - ISBN: 9781329675674