Donella Meadows

Both the United States and the world economy have already reached - and surpassed - their sustainable physical limits. Ground water is being drawn down, soils eroded, forests cut faster than they grow, fish caught faster than they reproduce, non-renewable fossil fuels burnt without developing substitutes.

There is hardly a place on Earth where people do not log, pave, spray, drain, flood, graze, fish, plow, burn, drill, spill or dump. There is no life zone, with the possible exception of the deep ocean, that we are not degrading.

Speak the truth._x000D_ Speak it loud and often, calmly but insistently,_x000D_ and speak it, as the Quakers say, to power._x000D_ Material accumulation is not the purpose of human existence._x000D_ All growth is not good._x000D_ The environment is a necessity, not a luxury._x000D_ There is such a thing as enough.

No one can define or measure justice, democracy, security, freedom, truth, or love. No one can define or measure any value. But if no one speaks up for them, if systems aren’t designed to produce them, if we don’t speak about them and point toward their presence or absence, they will cease to exist.

Like the other great revolutions, an environmental revolution will require sacrifices and lead to enormous gains. It, too, will change the face of the land and human institutions, hierarchies, self-definitions, cultures. It will take centuries. If it happens. There is no guarantee, of course.

There are no separate systems. The world is a continuum. Where to draw a boundary around a system depends on the purpose of the discussion.

A vision should be judged by the clarity of its values, not the clarity of its implementation path [in Mediated Modeling page 43]

World fertility surveys indicate that anywhere from one third to one half of the babies born in the Third World would not be if their mothers had access to cheap, reliable family planning, had enough personal empowerment to stand up to their husbands and relatives, and could choose their own family size.

No one wants growth, constant expansion, physical swelling. Growth is not a human value; it's a means to the ends of sufficiency and security. Once we have enough, no one wants more, unless it is sold to us as a cheap substitute for something else, something non-material.

We are dependent not so much on Earth, the third planet orbiting the sun, as on Gaea, the integrated system that includes, sustains and is shaped by life.

We know it is impossible to go on finding, moving and wasting oil, leveling forests, paving land, dumping poisons, and multiplying our numbers. A new way of life, a new set of thoughts must be found.

Ending poverty calls for humility, honesty, freedom from ideology and refusal to accept cruel simplicities about anyone's human potential. It requires listening to the wisdom and cutting the nonsense from both the Right and the Left.

Relative to most of the energy and material flows on Earth, the machinations of humankind are puny. The planet's powers are much, much bigger than our own. But in a few sensitive places, we're making an impact on a planetary scale, and that impact is not a good one.

The human world is a long way from meeting the needs of the present, and it is borrowing massively from the future - not only by piling up money debt, but also by degrading the resources from which all real wealth ultimately comes.

It's a fair guess that at the rate we're destroying habitat, especially but not exclusively in the tropics, we're pushing to extinction about one species every hour. That doesn't count the species whose populations are being reduced so greatly that diversity within the population is essentially gone.

The kind of support the down-and-out need is the kind we have always refused them, the kind that would mean engaging with them not as objects of contempt, but as fellow human beings.

Corporate responsibility extends not only to the customers, the resources and the workers of the present, but also to those of the future.