In 1900 he began composing poetry, signing his work "Umberto Chopin Poli." In January 1903 Saba travelled to Pisa to study archaeology, German and Latin, but began to complain of a nervous disorder and, in June, returned to Trieste. After a holiday in Slovenia, he spent some time later that year in Switzerland, writing a play. In July 1904, the socialist newspaper, Il Lavoratore, edited by his friend Amadeo Tedeschi, published Saba's account of a visit to Montenegro earlier in the year, and in May 1905, Il Lavoratore printed his first published poem. In 1905 he travelled to Florence with friends and – upon meeting his father for the first time – changed his nom de plume to "Umberto da Montereale," after the town of his father's birth. That summer he met Carolina (Lina) Wölfler, and began corresponding with her the following December. Between 1907 and 1908 he completed an obligatory year of Italian military service in an infantry unit based in Salerno. He married Lina in a Jewish ceremony in 1909, and they had a daughter, Linuccia, the following year.