Un repaso esencial de los problemas actuales del mundo y de c mo deber amos prepararnos para el ma ana, obra del l der de la opini n p blica internacional. Tenemos dos opciones. Podemos ser pesimistas, abandonar y contribuir a que ocurra lo peor sin vuelta atr s. O ser optimistas, atrapar las oportunidades que sin duda existen y contribuir, tal vez, a que el mundo sea un lugar mejor. No es una elecci n demasiado dif cil. Noam Chomsky, el incomparable pensador pol tico, nos ofrece una exploraci n del neoliberalismo creciente, de la crisis de los refugiados en Europa, del movimiento Black Lives Matter, de las disfunciones del sistema electoral estadounidense y de las perspectivas y los desaf os de organizar un movimiento para el cambio radical. Con cuatro entrevistas actualizadas sobre la campa a de las elecciones de 2016 en Estados Unidos y la resistencia global contra Trump, Optimismo contra el desaliento aporta una presentaci n concisa de las ideas de Chomsky y de su mirada sobre el estado actual del mundo. ENGLISH DESCRIPTION This volume offers readers a concise and accessible introduction to the ideas of Noam Chomsky, described by the New York Times as arguably the most important intellectual alive. In these recent, wide-ranging interviews, conducted for Truthout by C. J. Polychroniou, Chomsky discusses his views on the war on terror and the rise of neoliberalism, the refugee crisis and cracks in the European Union, prospects for a just peace in Israel/Palestine, the rise of the Black Lives Matter movement, the dysfunctional US electoral system, the grave danger posed to humanity by the climate crisis, and the hopes, prospects, and challenges of building a movement for radical change. Noam Chomsky is Institute Professor (Emeritus) in the Department of Linguistics and Philosophy at MIT. His work is widely credited with having revolutionized the field of modern linguistics. He is the author of numerous best-selling political works, which have been translated into scores of languages worldwide. C. J. Polychroniou is a regular contributor to Truthout as well as a member of Truthout's Public Intellectual Project. He has published several books and his articles have appeared in a variety of journals, magazines, newspapers, and popular news websites.