I’m not sure these are finished, but they are well underway.

Sustainability = the capacity of the people living in a community to meet all their needs, using the time and skills of the population and the energy, resources, and ecological functions from the land/air/water that they are stewards of, in perpetuity.

Development = the increase in quality of life within a community between two points of time

Sustainable Development = an increase in quality of life of the population of a community between two points in time, using the time and skills of the population and the energy, resources, and ecological functions from the landmass they are stewards of, in a manner that can be maintained in perpetuity.

Economy = the use of trade to access critical resources otherwise unavailable to the individual, industry, and government; to disburse wealth throughout the community; and to facilitate the creation and use of infrastructure of all kinds.

Infrastructure = an investment of time and resources with an expectation of a return on that investment in the form of time and/or resources into the future.

Economic Sustainability = the capacity of the people of a community to meet their needs through internal trade arrangements and co-management relationships with other communities, so that no skills, resources, or ecological services are required to be purchased from outside of the community and its partners, to meet needs, in perpetuity.

Sustainable Economic Development = an increase in the quality of life between two points in time by increasing specialization and productivity of the population, while reducing the internal barriers to trade of critical resources and the external barriers to co-management of critical resources, and retaining a sufficient financial reserve to address economic disruptions.

Society = the use of community by its citizens to encourage the conditions that allow people to have their needs met more efficiently and effectively than is possible as a family.

Social Sustainability = the capacity of the people of a community to ensure they can operate as a cohesive group by having a sense of mutual respect, equity, and belonging, and generally agreed-on goals and aspirations, past any planning horizon.

Sustainable Social Development = an increase in the quality of life of a community between two points in time, by encouraging the unique customs, arts, and social institutions of those people that provide them with a sense of mutual respect, equity, and belonging while ensuring that no subset of the community receives a greater burden than benefit from any development initiative.

Ecology = the ecological capital and functions of the land, water, and air that the people of a community are stewards of.

Ecological Sustainability = the capacity of the people of a community to maintain the ecological functions of the land, air, and water that they are stewards of, in perpetuity.

Sustainable Ecological Development = an increase in the quality of life of the people of a community between two points of time by restoring or enhancing the ecosystem services that provide resources and absorb waste from the land/water/air that they are stewards of, while ensuring that a non-declining portion of each biome is maintained as a ‘wilderness’ that is neither a sink for wastes nor a source for resources.

Quality of life is dependent on how needs are met.  There is no concensus on a specific exclusive definition of Quality of Life.  I will introduce two concepts that are expected to cover the range of the term.

Potential Quality of Life = the time available within a community for activities other than those that are expected to meet needs, while considering the impact of the eventual loss of overconsumed resources

Actualized Quality of Life = the time available within a community for activities other than those that are expected to meet needs, while considering the impact of the eventual loss of overconsumed resources, as if all needs were met.

Meeting Needs = activities that prevent the degradation of the self, family, or community.  Needs themselves are aspects of being human and are universal and invariant. 

Technological Development = the creation or enhancement of systems of infrastructure with an expectation of an improvement in the actualized quality of life of a community.

Sustainable Technological Development = the creation or enhancement of systems of infrastructure with an expectation of an improvement in the quality of life of a community, focusing on the needs of the community and the resources available in perpetuity.

Human Development = the identification and removal of the obstructions that prevent people from being able to meet their needs, and the education, encouragement, and advocacy for people to take control of their lives and social environment, such that freedoms, choices, and capabilities are enhanced.

Sustainable Human Development = the identification and removal of the obstructions that prevent people from being able to meet their needs and the education, encouragement, and advocacy for people to take control of their lives and social environment, such that freedoms, choices, and capabilities are enhanced, in a manner that can be maintained in perpetuity.

Community Development = the reduction of disparity and the increase in social integration, allowing people to meet more needs by working better together.

Sustainable Community Development = the reduction of disparity focused around the resources and ecological functions that are available in perpetuity, and the increase in social integration at a greater scale.

Critical Resource = any of a renewable or non-renewable resource or an ecological function that is used to meet needs.