He became famous as a sociographic and fictive short-story writer. His prose fiction often draws on autobiographical materials. He was considered to be a populist author seekingreform in imaginative and sociographic writings, socialistic but highly independent. A great deal of his influences came from Marxism and Freudism. Between 1930-1945, he turned to Hungarian past as subject for historical novels, in which he seeks to discover lasting characteristics of Hungarian people. Julianus barát has been translated into Italian, and some of his short stories were published in English, French, German, Italian, and Serbian. In this time he changed some of his views. He thought that Socialism could solve global but not local problems. He oriented himself to the right side more and more. He wrote to nationalist papers, but he opposed National Socialism, Fascism and was against Hitler. He joined to the group of the anti-Nazi resistant Endre Bajcsy-Zsilinszky and a group of writers, the "Folk Writers", along with László Németh, Gyula Illyés, Géza Féja, Zsigmond Móricz and others. He agreed with the political views of László Németh, which he called "The Third Way for Hungary". He was both ridden during fascism and communism. By writing a memorandum to Miklós Horthy jr.'s Secession Office, he got involved into anti-Nazi activities and that's why he had to escape from Balatonakarattya to Budapest in 1944. After Nazis been defeated, an anti-Nazi witch-hunt started by some bourgeois newspapers. Some of the folk writers really collaborated with Nazis more or less, but men were mired too despite they weren't related at all with them. After Géza Féja had been arrested, Kodolányi had to escape from Budapest to Pécs, where he was safer, but he was prohibited to publish anything. He retreated to his house in Balatonakarattya. He wrote his greatest mythic, magic realistic novels there, Én vagyok. In these novels, he found his way back to the great myths of mankind, the Epic of Gilgamesh, the Bible and the stories of Utnapishtim, Gilgamesh, Moses, Jesus and Judas.
