This work analyzes the contributions of Clément Colson to economics. We show that each of the developments in his work combines theory and practice and takes its inspiration from the problems of the time, the influence that he had on his principal students, and the relevance of some of his recommendations.
Keyword: Histoire de la pensée économique, histoire économique, ingénieurs économistes, École libérale française, question sociale, tarification des chemins de fer, yield management, mode d’exploitation des chemins de fer, intervention de l’État, lutte contre le socialisme