Leoni was professor of legal theory and the theory of the state at the University of Pavia, a practicing lawyer, founding editor of the journal Il Politico, newspaper columnist, and secretary and president of the Mont Pelerin Society.
Ludwig von Mises: ". The use of money in a market economy is a praxeologically necessary fact. That gold, and not something else, is used as money is merely a historical fact and as such cannot be conceived by catallactics." - Human Action