This stay allowed him to become familiar with the Cubist painters, who did not however find favour in his eyes – apart from Roger de La Fresnaye – as, in his opinion, they simply imitated African art without being able to render the latter's originality.

During the period from 1925 to 1928, he worked with the painter Jean-Louis Gampert, La Fresnaye's friend; he assisted him in his atelier and also in the realisation of the decor for the Corsier church (Geneva).

He discovered the Musée du Louvre where he made numerous copies, essentially in the form of drawings, from Rembrandt, Rubens and Géricault.

He also had a few health problems and was not able, to his great regret, to attend the vernissage of the major Courbet retrospective organised in July at the Musée d'Ornans on the occasion of the fiftieth anniversary of the painter's death.

Meanwhile, in October 1981, he gave away a large part of his collections – nearly eight hundred pieces of African and Oceanic art - to the Ethnographic Museum in Geneva.