1930s
By the 1930s he "had become the apostle of the younger generation" and was attacking "viciously" the Christian spiritualism of Einar Hjörleifsson Kvaran, an influential writer who had also been considered for the Nobel Prize.
"... with "Salka Valka" (1931–32) began the great series of sociological novels, often coloured with socialist ideas, continuing almost without a break for nearly twenty years. This was probably the most brilliant period of his career, and it is the one which produced those of his works that have become most famous. But Laxness never attached himself permanently to a particular dogma."
Other major works from this period include Sjálfstætt fólk (Independent People, 1934, 1935), and Heimsljós (World Light, 1937, 1938, 1939, 1940): "... which has been consistently regarded by many critics as his most important work.".
He also traveled to the Soviet Union and wrote approvingly of the Soviet system and culture.
Read more about this topic: Halldór Laxness