Therefore, he began taking part in many varied committees and orders, he joined the editorial offices of the Dutch-Belgian youth magazine Gard Sivi and contributed to literary magazines such as Litterair Paspoor, De Gid, De Nieuwe Stem, Maatstaf and De Revisor.
He was an active member of the Dutch and the International PEN Club, the Writers' Association, the Dutch Literature Association and the UNESCO National Commission.