It is not a question of adding “sustainable” to any theme to go in the right direction. We must ecologize our mind, that is to say to think simultaneously, the process the transversality and the interrelation. It is therefore a new culture that must be developed and practiced. This is to say that both the organizational chart of municipalities and the government should break with the vertical thematic silos and opt for collegiality, that the disciplinary university streams should be entirely reorganized. To expose the stakes and the modalities of this greening of our culture, this change of view on the living – including humans -, especially in cinema, who other than Jean-Michel Durafour?