Abstract:
Since the beginning of the 1970s, the questions related to ecology come in the forefront and progressively led to the adoption of the concept of sustainable development, which now appears to be a new world-wide objective. We argue that numerous writings of Keynes contain the premises of such a sustainable development. We present his views relatively to the three pillars of sustainability: ecological, social and financial. Indeed, Keynes’ positions on uncertainty, money, the place of economics, arts, financing, philosophy, etc. are consistent with a strong sustainability. Finally, we try to give some insights for an indispensable 21st century post Keynesian sustainable development program.