The psychological experience is not always in the register of pathology. Classification must be as close as possible to the clinical examination, but also respectful of human principles. For a long time classifications have had a Linnaean feel; the concerns of psychiatrists with little leeway for therapeutic action. Professor PELICIER was accustomed to saying that these classifications could be called “herbariums of the Flowers of Evil”, with a capital letter on Flowers, recalling one of our great poets, Charles Baudelaire, who described melancholy so well “When the low, heavy sky weighs like a lid on the groaning spirit, victim of long ennui”