Hélion resisted his more commercially-minded friend Simenon’s urgings to sell his early works. He and Torres-García worked together on a magazine Hélion had founded. Duchamp, Ernst and Tzara became friends in Paris: also Éluard, Matta and Tanguy. He founded an artists’ group (and another magazine) with van Doesburg: this evolved into Abstraction-Création, involving Arp, Gleizes, Delaunay, Mondrian and Pevsner. He met Lipchitz, Miró and Nicholson after returning from his first visit to the U.S.