In 1913 the party created Maurista. In 1919 he was Minister of Public Works in the government headed by Antonio Maura. During the dictatorship of Primo de Rivera lives out of politics. In 1930 called for the abdication of Alfonso XIII. In 1931 he was deputy for Madrid in the Constituent and became president of the Legal Adviser, in charge of drafting the new constitution draft. He was president of the Spanish section of the Universal Peace Union. Collaborated with the School of Social Studies for Women and the Women’s Committee for Social Improvement.
He worked for the inclusion of domestic service in the benefits of labor retirement laws and accidents. He was an advocate of the Republic from 1931 until his death. During the war provoked by the military rebellion helped General Franco of Spain Time magazine and was ambassador to Belgium, France and Argentina. Recognizing the Government of Argentina Franco’s Spain in late February 1939, left the embassy. Collaborated in Spanish Thought, a monthly magazine, which appeared in Buenos Aires in 1942 and was distinguished by its independence and its content and intellectual tone in which the most prominent part of the Republican Center of Buenos Aires Spanish. He also lent his cooperation to Spain Free, a biweekly newspaper published in Santiago de Chile in 1942. He participated in the Tribute to Jovellanos Asturian Center of Buenos Aires on the bicentennial of his birth, along with other prominent intellectuals in exile, Francisco Ayala, Claudio Sanchez Albornoz and Clemente church tower, among others.
Among the most important title of his extensive works cite: July 1909 in Barcelona (1910), Speaking on Catalan (1910), History of Catalan political thought during the war between Spain and the French Republic (1793-1795) (1913) The soul of the gown (1919), Letters to a girl on civil law issues (1925), Letters to a lady on issues of political rights (1930), The sediment of the fight (1933), Origins of Spain next Current (1940), The Spain of my life (1941), The war in Spain and the Catholics (1942), Draft of the Bolivian Civil Code (1943), The reform of the Argentine Civil Code, The world that I want (1943) V sacrifice Campanys round (1943), Foundations of Christian Democracy (1944), political notions of international law (1944) textbook, Women (1944), Dictionary Spanish political, historical and biographical from Charles IV to 1936 (1945) and Grace (1945). Posthumously published The Rights of Man, the citizen and the state (1946) and female Dialogues (1947). And, as this conservative misunderstood, rara avis among the Spanish right all the time: “For in the end, there is no freedom without democracy and no democracy without freedom. And one of the essential freedoms of democracy is the vote, so that laws come from the legitimate authorities, which can not be others, but those designated by the social body. “Francisco Arias Solis can not be free anymore to enter free.