Hexaemeron, a poem describing the six days of the Creation (c. 1622), published posthumously External struggles with Sweden and internal rivalries among the nobility leading to Denmark's absolute monarchy in 1660 are chronicled from a royal prisoner's redemptive perspective in Jammersminde (Remembered Woes), in the heartfelt prose of Leonora Christina of the Blue Tower, written 1673–1698, but first published in 1869. 18th century Ludvig Holberg (1684–1754), influenced by the ideas of the Enlightenment and Humanism, is considered the founder of modern Danish and Norwegian literature. He is best known for the comedies he wrote in 1722–1728. Among the most popular are Jean de France and Erasmus Montanus, both in the satirical style of Molière with pretentious, stereotyped characters. The first is about a Dane who, after picking up notions of the French language and lifestyle while in Paris, tries to impress his countrymen on his return to Denmark. The second presents Rasmus Berg, the son of a farmer. On completing his college education, he Latinized his name to Montanus and became a menace to his family and neighbours with all he has learned. Neoclassical poetry, drama, and the essay flourished during the 18th century influenced by French and English trends. German influence is seen in the verse of the leading poets of the late 18th century such as Johannes Ewald and Jens Baggesen. Other 18th century writers include the pietist hymn writer Hans Adolph Brorson and the witty, satirical poet Johan Herman Wessel. 19th century The Golden Age During Denmark's Golden Age (1800–1850), literature centred on Romantic thinking. It was introduced in 1802 by the philosopher Henrik Steffens who gave a successful series of lectures at Elers Kollegium. He presented the main themes of German romanticism, emphasising the relationship between nature, history and mankind. The movement was maintained by the romanticists, especially Adam Oehlenschläger (1779–1850). Remembered today for his Digte (1803) and Poetiske Skrifter (1805), Oehlenschläger quickly became the leading poet in Denmark. Bernhard Severin Ingemann (1789–1862) also published a collection of romantic poems before producing first a number of plays, then a successful series of novels and finally a number of fine religious poems which, after being set to music, became an important addition to the hymns sung in Danish churches. One of the most important figures in Danish literary culture was Nikolaj Grundtvig (1783–1872) who instilled a growing spirit of nationalism based initially on his Northern Mythology (1808)