John Eatwell is Honorary Fellow of Queens’ College, Cambridge; Member of House of Lords of the United Kingdom; and Foreign Fellow of Accademia Nazionale dei Lincei, Italy, and was President of Queens’ College, Cambridge. Pasquale Commendatore is Professor of Economics at the University of Naples Federico II, Italy. Neri Salvadori was Professor of Economics at University of Pisa, Italy, and is Corresponding Fellow of Accademia Nazionale dei Lincei, Italy.