De-growth must be started immediately and urgently planned to combat the ecological crisis. We must produce less and better. The manufacture of certain products vital to the well-being of the population must increase (construction and renovation of decent housing, public transport, health centres and hospitals, drinking water supply and sewage treatment, schools, etc.) but many other productions must radically decline (personal cars) or disappear (arms manufacturing). Greenhouse gas emissions must be drastically and abruptly reduced. A whole range of industries and agricultural activities need to be converted. A large part, and in some cases all, of the public debt must be cancelled.