Levstik was the first notable writer of Slovene epic prose. Among his most known works are the short tale Martin Krpan, which became a classic work of Slovene literature, and the itineraryPopotovanje iz Litije do Čateža, whose main objective is actually that of a literary manifesto. In the critical essay Napake slovenskega pisanja, he exposed his views on the development of the Slovene literary language.