An English translation, not complete, has been published : Sketches of a journey, illustrated by Pierre Bonnard.
While in Paris, he was a particularly avid student of the French modernism of André Derain, Édouard Vuillard, and Pierre Bonnard, inspirations which are evident in his own refined color sense.
Pierre Boulez | Pierre Trudeau | Pierre-Auguste Renoir | Pierre Corneille | Jean-Pierre Rampal | Pierre Loti | Pierre | Pierre Teilhard de Chardin | Jean-Pierre Thiollet | Pierre Puvis de Chavannes | Pierre Cardin | Pierre Bourdieu | Pierre Amoyal | Pierre Huyghe | Pierre Bonnard | Pierre-Constant Budin | Pierre-Joseph Proudhon | Pierre Beaumarchais | Pierre Restany | Pierre Curie | Pierre Louÿs | Pierre Bayle | Marco Pierre White | Jean-Pierre Ponnelle | Jean-Pierre Jeunet | Saint-Pierre, Martinique | Saint-Pierre | Pierre Monteux | Pierre Gassendi | Pierre Clémenti |
Numerous exhibitions have been presented at the gallery, including the works of Monet, Degas, Cézanne, Renoir, Pissarro, Bonnard, Tanguy, Léger, Picasso, Modigliani, Matisse, Rauschenberg, Sisley, Feininger, Giacometti, and Miró.
He captured the creative spirit and environment of painters such as Pierre Bonnard, Henri Matisse, Joan Miró, Pablo Picasso, Fernand Léger, Marc Chagall, Francis Bacon, David Hockney, etc.
Subsequently the Impressionists, as well as such 20th-century artists as Pierre Bonnard, Edward Hopper, and David Park painted scenes of daily life, but in the context of modern art the term "genre painting" has come to be associated mainly with painting of an especially anecdotal or sentimental nature, painted in a traditionally realistic technique.
A passionate collector of poster art, during his lifetime he amassed a collection of 5000 posters composed by artists that included Henri Toulouse-Lautrec, Jules Chéret, Pierre Bonnard, Leonetto Cappiello, Eugène Grasset, Adolphe Léon Willette and Jules-Alexandre Grün.
In 1899, Roussel, Vuillard, and another close friend, Pierre Bonnard, traveled to Lake Como, Venice and Milan.