[5] Together with his close friend Eli Gallastegui and the painter José María Ucelay, de la Sota was one of the main promoters of the propagandist theater movement.

[7][8] His friendship with Gallastegui rendered Sota to follow him in his nationalist orientation that promoted the Mendigoizale movement, despite which he always collaborated with José Antonio de Aguirre, a future Lendakari.

[1] Between 16 and 23 February 1928, de la Sota published in the Excelsior, which was owned by his family, a delicious gastronomic epistolary that, in seven installments and dedicated to the then director of the newspaper Jacinto Miquelarena, served him to present his personal theses about food, drink and good living.

[9] In his articles he displayed a cosmopolitan and refined taste with nods to local products or recipes and, despite having studied in England, throughout his seven chapters he revealed to have a rather Francophile palate.

[9] Aside from a brief initial discussion about whether to say mahonesa or mayonesa, the text begins by revealing that his true interest was not in the plates but in the glasses, writing extensively about wine; when to drink it, at what temperature and even how to appreciate it.

[4] His status as president of Athletic Bilbao, earned him the appointment of a member of Sports in 1932 on the Permanent Board of the Society of Basque Studies, a position in which he remained until 1936.

[1] In addition to football, de la Sota also loved mountaineering, which highlights his attachment to modernist ideas and aesthetics.

[7][8] In 1940, de la Sota was part of the delegation of the Basque Government in New York City, where he collaborated until 1946 when, after the Second World War, he returned to his home in Biarritz.