He soon moved to Paris, where he began to make his little square men wander on sheets of rough paper, disorienting them both among cities crowded with curved arrows and in flat desert expanses, and above all he began to spread the colors by blending them dizzily, at first with many nocturnal blues and gradually more and more sunny between yellows and warm oranges. In the 1960s he published illustrations and covers for international magazines, such as "Time", "Fortune", "Graphis", "The New Yorker", "L'Express", "Le Nouvel Observateur" and began to design advertising posters, for example for Olivetti, and to exhibit in galleries and museums throughout Europe and the world. He applied his dreamy visionary nature to literature and communication: many posters rely on his unmistakable signature, especially if for humanitarian, cultural, animal rights, ecological initiatives in general. Particularly memorable in Italy is his campaign for Snam “methane gives you a hand” which also uses an evocative animated film. He therefore expresses himself through etchings, aquatints, watercolours, but also sculptures and bronze fountains of considerable size, characterised by his unmistakable little man with a hat. His best-known public sculpture is the seated man in Knokke (B), which appears and disappears with the movement of the tides. Since 2000 his work has now been well represented at the Fondation Folon in Belgium.