Gustave de Molinari (1819–1912) is one of the most important representatives of the French liberal school in the 19th century. Although a Belgian by birth, he is, without contest, a member of the French tradition in the same way as Jean-Baptiste Say or Frédéric Bastiat. Yet, his work is little-known, or only limited to the knowledge of his most controversial theories, which are set out in his most famous publications, “De la Production de la Sécurité.