This study analyzes the place and role of immigration as a theme in classical sociology, beginning with the "founding fathers of sociology", Karl Marx, Max Weber, and Émile Durkheim, respectively. The study goes on to discuss the work of Georg Simmel and representatives of the Chicago School. Revisiting each of the authors and especially others from the Marxist school, the study analyzes the context and works in which the theme was dealt with directly or indirectly. The classical authors were sensitive to the theme. The apparent contradiction between the historical importance of the phenomenon of international migrations and the limited space dedicated directly to it - especially in the case of Marx, Durkheim, and Weber - should not overshadow the role it played in their work, still insufficiently measured. The explanation for this may be found in the phenomenon's crosscutting nature, the theoretical perspectives adopted towards it, and the fact that the sociology of immigration was first developed in the Americas.
sociological theory; classics of sociology; immigration