Between 1906 and 1916 he was President of the Instituto Paraguayo (Paraguayan Institute), Paraguay's foremost intellectual institution at the time. In 1913 he participated in the foundation of the Patriotic Union, of which he was in charge along with
Emilio Aceval. He was in charge also of the Instituto de Alta Cultura Paraguayo-Argentino (Institute of Paraguayan-Argentine Culture). He was
Minister of Finance of Paraguay between 1916 and 1917. In 1913 he was member of the Comisión de Códigos (Code Commission); in 1916 he was Minister of the Interior during the government of
Manuel Franco. Because he had some disagreements with
José Pedro Montero, he left public service on August 25, 1919. On April 12, 1923 he was appointed
Minister of Finance of Paraguay in the provisional cabinet of
Eligio Ayala. Riart retired after the overthrow of the government on 18 February 1940. ==References==