Liliana WEINBERG MARCHEVSKY has a broad experience as both an essayist and literary critic, having adopted the Latin American essay of the 19th and 20th centuries as her main research interest. Her dedication to the theoretical study and critique of the essay, the study of literary theory, social discourse and intellectual history resulted in authorship of Ezequiel Martínez Estrada y la interpretación del “Martín Fierro” (1992), in which she analyses the work of Ezequiel Martínez Estrada, the Argentine author who has formulated one of the most interesting proposals about Martín Fierro, a well-known classic of Latin American literature. In her works El ensayo, entre el paraíso y el infierno (2001), Literatura latinoamericana: descolonizar la imaginación (2004), Umbrales del ensayo (2004), Situación del ensayo (2006), and Pensar el ensayo (2007), she offers a major intellectual contribution to theories about a genre that has been of utmost importance in Latin American cultural life. Her work demonstrates the impact of the essay as a manifestation that documents in a reflective way the historical, social and cultural vicissitudes of the societies of Latin America.