Rivera and called for Spain to "recover its 16th-century sense of Roman Catholic mission". In 1926, his literary essays were published in Don Quijote, Don Juan y La Celestina, and in 1928, he served as Spanish ambassador to Argentina. In 1930, he joined the National Monarchist Union, the successor party to Primo de Rivera's Patriotic Union, along other defenders of the dictatorship such as the son of the dictator José Antonio and the former ministers José Calvo Sotelo and Eduardo Callejo de la Cuesta. Along with Pedro Sainz Rodríguez and others, Maeztu founded the monarchist political movement Acción Española in 1931. In 1934, his final published book was written, Defensa de la hispanidad ("In Defense of Spanishness"), which advocated "a return to pure Spanishness" and strongly condemned liberalism and the French Revolution's slogan "liberty, equality, fraternity", which he countered by his own motto, duty, hierarchy, and humanity. He thought of Spanishness as a spiritual world that united Spain and its former colonies by the Spanish language and Catholicism, with rationalism and democracy being supposedly alien to the Hispanic ethos. Since 1932, he made it constant in several articles for Acción Española and the ABC newspaper, his admiration for Adolf Hitler, also showing himself to be a supporter of the anti-Semitism of the Nazi Party. Also from the pages of ABC, he came to express his desire that a nationalist movement similar to Hitler's would triumph in Spain to confront democracy and Marxism, asking the extremist José María Albiñana to lead the project.[23] Death and legacy On October 29, 1936, Maeztu was executed by Republican soldiers in the early days of the Spanish Civil War near Madrid. These last words are attributed to him: "You do not know why you kill me, but I know why I'm dying: for your children to be better than you!" His political thoughts had a profound influence on the Chilean historian Jaime Eyzaguirre. His younger sister was the Spanish educator and feminist, María de Maeztu, who founded the Residencia de Señoritas and the Lyceum Club in Madrid, and his younger brother was the painter Gustavo de Maeztu, who has a museum named after him in the Palace of the Kings of Navarre in Estella, Spain. The Spanish philosopher José Ortega y Gasset dedicated his book Meditations on Quixote (1914) to Maeztu — "A Ramiro de Maeztu, con un gesto fraternal." Works (1899). Hacia otra España