Bernard Quentin was thrust into the limelight after his encounter with Picasso between 1942 and 1945 as he adopted an abstract expressionist style with subjects on the horrors of war. Frequenting all artistic circles, he met Isidore Isou and switched to lettrism which seized all areas of knowledge and knowledge and in particular the arts. His ambition is then to link scripturality and art, he centers his works on writing, wishing to find a universal language, comprising symbols understandable by all. Words then become the very subject of his works. He uses color to situate his signs grammatically and thus uses blue for adjectives, red for nouns and orange for articles and pronouns.