sentences:  Eiríksson studied theology at the University of Copenhagen, where he was deeply influenced by Professor Henrik Nicolai Clausen (1793–1877), who represented a form of theological rationalism which appealed to him.After obtaining his degree in 1837, Eiríksson became a tutor to theology students ("manuduktør"), among whom he enjoyed considerable popularity.Unlike to Clausen's rationalism, Eiríksson was very critical to H. L. Martensen's speculative theology, which he violently attacked in various publications from 1844 to 1850.