In the world today, we must make a new Cleisthenic moment. To achieve sustainable development and to accomplish its other global goals, the United Nations must be modernized and reformed to become more democratic. Other international institutions of all kinds must be made more responsive to the “grass roots” of the world through participatory and other democratic reforms. In addition, new global institutions must be established to address global concerns. Moreover, global democratic governance must be speeded up and enhanced through the rising voice emerging from new and parallel channels of democratic participation outside the bounds of borders and governments, including the global proliferation of grassroots networks for sustainable development. These participatory networks must surround and inspire the reshaping of global governance into a governance that is truly democratic. We must reform democratic representation to make it right. And we must couple it with collective wisdom derived from the random selection of sortition. We must construct a framework for enabling democratic global governance that will blend right representation with sortition to produce better results for sustainable development and for all else of common concern for all of humanity.