Traverses the life of Sarmiento from his childhood in San Juan, his formative stage, the universe of his beliefs, the formation of his worldview and his early links with education. It also highlights his stay in Chile before and after the battle of Caseros, his travels around the world, his experiences as a legislator, his books, his diplomatic and journalistic work. The life of Sarmiento is a window that allows us to see what, in general, the nation becoming in those turbulent years of the 19th century.