Part 1 shows that it is not possible to make the social, economic,
political, and environmental dimensions of sustainable development work
together unless homo economicus becomes homo solidarius.
Part 2 shows that the transition from homo economicus to homo
solidarius will take time but is feasible as it does not require
further evolutionary
development of homo sapiens sapiens.
Part 3 will explore human nature -- the psychosomatic-spiritual nature
of homo sapiens sapiens -- to discern
how the required growth in human
solidarity might be accomplished.