The natural elements of earth and air reappear constantly in his poems. The world, as he has written, will not end up in a book, as Mallarmé had claimed, since for du Bouchet the world has no end.
In his poetry, the natural elements of earth and air are consistently featured.  Du Bouchet believes that the world will not be confined to a book like Mallarmé suggested, because he sees the world as having no end.