At the end of this creative eruption, Undset entered calmer waters. After 1929, she completed a series of novels set in contemporary Oslo, with a strong Catholic element. She selected her themes from the small Catholic community in Norway. But here also, the main theme is love. She also published a number of weighty historical works which put the history of Norway into a sober perspective. In addition, she translated several Icelandic sagas into Modern Norwegian and published a number of literary essays, mainly on English literature, of which a long essay on the Brontë sisters, and one on D. H. Lawrence, are especially worth mentioning. These are not great literature, but they are strong and inspiring.