Abstract
The importance of an author can be evaluated by the extent to which his theoretical contribution transforms a certain area of knowledge: major researchers create new vistas. This certainly applies to Lev Vygotsky (1896–1934), one of the most brilliant authors of contemporary psychology. His work, owing to its originality, is of epistemological interest to several areas of knowledge. In fact, Vygotsky was at the center of a historical time of change in twentieth-century Russia, in which Mikhail Bakhtin, Roman Jakobson, Serguei Eisenstein, Alexander Luria, and Yuri Lotman took part. Their theoretical proposals had repercussions in several areas of knowledge: in literature, semiotics, film, and ..