Six useful lessons. I am aware of it: talking about the positive elements in the European debate about the Roma and illegal immigration is almost a provocation. This debate has been sharply conflictual, created a number of uncomplimentary remarks and accusations, and raised a huge polemic which is far from over. Many of the commentaries have often contained more a tone of indignation than one of understanding, and a legal dispute is in the offing. Nonetheless, I consider it possible to make...