 This created some opposition from the conservatives, most notably from the poet Johan Sebastian Welhaven.The influential playwright Henrik Ibsen was inspired by the nationalistic movement, but in his later writings he wrote mostly in standard Danish, probably out of concern for his Danish audience.By 1866, Danish clergyman Andreas Listov (1817–1889) found it necessary to publish a book of about 3,000 terms that needed translation from Norwegian to Danish.