He remained in that post until 1905 when he decided to leave teaching in order devote himself entirely to writing.
[2] After this Bergström devoted himself to working as a playwright with his first successful play being Idas Bryllup in 1901.
This was followed by the plays Møntergade 39 (1903), Langaard & Co. (1905), Karen Bornemann (1907), and Det gyldne Skind (1908); the latter of which was extremely successful.
[1] His 1912 play Vejen til Gud was barred from the stage by the government censors.
[2] His play Karen Bornemann was translated into English by Edwin Bjorkman and was staged at the Greenwich Village Theatre in New York in 1918 with Fania Marinoff in the title role.