"Keynes did not believe that political freedom and economic efficiency, for which he hoped, would suffice to bring about a better world. It was also necessary to guarantee social justice. The problem of articulating between these various ends is far from being satisfactorily resolved. In his tireless search for a solution to this challenge, Keynes figures among the great humanists and social thinkers whose work merit closer understanding and meditation. For Keynes, the problems of poverty, inequality, unemployment and economic crises are neither exogenous accidents nor punishments for excess, but rather the result of a poorly organized society and human error. It is these up to individuals united in the polis to attenuate or end them by carrying out major reforms. Are such reforms possible within the context of the capitalist economies known to us today? Keynes believed or at least hoped they were. The setting up of the Welfare State seemed to prove him right, but the tide has turned and his diagnosis of capitalism's state of health, put forward now more than half a century ago, is more relevant than ever. No one can claim to know what the future holds. It is up to us, however, to construct it. This is perhaps the main message of John Maynard Keynes."