Georges Sorel
After 1905, he began to move away from social democracy towards revolutionary syndicalism, and translated the work of Karl Marx and Friedrich Engels into Hungarian. He wrote articles for socialist journals "Die Neue Zeit" and "Le Mouvement socialiste". He became associates with Georges Sorel, Karl Kautsky, Franz Mehring, Georgi Plekhanov, and later, with Hubert Lagardelle. He became a leader of the Hungarian anti-war movement during the First World War.