A talk given by Professor Gustavo A. Brandariz (University of Buenos Aires) on the idea of ‘nature’ in the works of Emerson, Thoreau, Sarmiento, Hudson and Martínez Estrada. Recorded in November 2024 as part of an international meeting honoring Argentinian writer Ezequiel Martínez Estrada on the 60th anniversary of his death. The linked video is in Spanish.