Luigi Einaudi was an authoritative Italian economist and a leading representative of economic and political liberalism in Europe. After the Second World War, he became governor of the Bank of Italy and president of the Italian Republic. This paper analyzes his role as opinion maker from the end of the nineteenth century until the 1920s, when he was a leading columnist at La Stampa and the Corriere della Sera, the most influential newspapers in Italy at that time. It focuses on the scope and limits of Einaudi’s efforts to broaden consensus in Italian public opinion on the principles of economic liberalism and free competition. To this end, it investigates Einaudi’s journalistic style, his views on the role of the newspapers, and his large following among the public. Further sections analyze the main issues tackled by Einaudi in his articles in the Corriere and the systematic work of propaganda he enacted during World War I to convince the Italian households to reduce consumption and to finance the military expenditure. A final section deals with the “reconstruction program” devised by Einaudi in the early 1920s with the aim of restoring price stability and fiscal restraint, his efforts in the Corriere to propagate this program, and his forced retreat from journalism after the beginning of the fascist regime in 1924–25.