André Salmon
On 1 May 1921 Hellens and André Salmon founded the "Signaux de France et de Belgique" (1921–1941), a magazine which had great influence on Belgian literary life. He made trips to Italy in 1925 and 1926 and to Norway in 1936. His father died in 1932, an event which prompted him to begin writing his voluminous diaries. In 1937 he signed the famous "Manifeste du lundi" of Charles Plisnier, a denunciation of regionalism.