This book presents a compelling argument against the sustainability of continuous economic growth under capitalism. Kohei Saito critiques the concept of "green capitalism," asserting that technological advancements alone cannot resolve the climate crisis. He advocates for "degrowth," a deliberate slowing of economic activity achieved through democratic reforms in labor and production. Practical measures proposed include ending mass production and consumption, reducing working hours to decarbonize the economy, and prioritizing essential labor over corporate profits. By transitioning to a system of social ownership, Saito envisions a society that restores abundance and focuses on activities essential for human life, effectively addressing climate change and promoting social equity