Born on 8 April 1878 in Barcelona to a well-off family, son of Juan Antonio Zulueta y Fernández and María
Dolores Escolano y de la Peña.[1] He was of Cuban descent on his father side and Gaditan on his mother side.[2] Zulueta, a native Spanish speaker, never got to fully dominate the Catalan language.[3] His father (who died in 1894) was a prominent lawyer, linked to the local banking industry.[4] After the decease of the former, Zulueta interrupted his secondary education studies to work as bank clerk.[4]
Since 1903 he shared letters with Miguel de Unamuno who encouraged him to travel to Geneva and Paris.[5] After a spell in Berlin, he returned to Spain in 1905.[5] He was elected as Barcelona municipal councillor in 1905, running within the Alejandro Lerroux's Fraternidad Republicana platform, yet he disengaged from the commitment to the party and moved away from Barcelona.[6][7] He met Francisco Giner de los Ríos (founder and leading figure of the Institución Libre de Enseñanza),[5] for whom he served as interlocutor until 1910, as Giner de los Ríos sought to cultivate the cultural and political bridges between Barcelona and Madrid.[8] After starting studies in Philosophy and Letters at the University of Salamanca, he earned the licentiate degree from the Central University in Madrid in 1906.[7] He would later earn a PhD from the same centre in 1910,[9] reading a dissertation titled La pedagogía de Rousseau y la educación de las percepciones de espacio y de tiempo ("Rousseau's pedagogy and the education of the perceptions of space and time").
For the rest of the Restoration, Zulueta was elected a number of times to the Congress of Deputies in representation of Barcelona (1910), Madrid (1919), and Redondela (1923).[13][14][15]
He was one of the intellectuals who signed the Manifesto for the Unión Democrática Española para la Liga de la Sociedad de Naciones Libres ("Spanish Democratic Union for the Society of the League of Free Nations"), published in 1918.[16]
Following the exit of the Radical Republican Party from the government, Zulueta (still not a member of Republican Action) was appointed as Minister of State by Manuel Azaña in December 1931,[17] replacing Alejandro Lerroux. After Zulueta's exit from the ministry in June 1933, he was destined as Spanish Ambassador to Nazi Germany, where he barely served for three months.[19] Years later, he wrote the memoirs of his brief spell in Berlin, "Mis recuerdos del Führer" (1954), leaving a portrait of Adolf Hitler and the pervasive manipulation techniques of nazism.[20] Following the exit of Azaña from the premiership, Zulueta joined Republican Action (he had not been a member until then).[19]
He was again appointed as Ambassador to the Holy See after the 1936 general election, and this time the Vatican accepted him.