He   joined the Dutch Communist Party, soon only to become disenchanted with it and, especially, with the political developments in the Soviet Union. In consequence, he left the Communist Party of Holland in 1924. He subsequently chronicled his embrace of, and break with, Communism in the first volume of his autobiography, Uit mijn communistentijd, published in Amsterdam in 1965 by his loyal publisher, G.A.
He   became a member of the Dutch Communist Party but soon lost faith in it, particularly after the changes in the Soviet Union's politics. He subsequently left the party in 1924 and wrote about his experiences with Communism in the first part of his memoirs, Uit mijn communistentijd, published by G.A. in Amsterdam in 1965.