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..

The world is a complex, interconnected, finite, ecological - social - psychological - economic system. We treat it as if it were not, as if it were d….

The scarcest resource is not oil, metals, clean air, capital, labour, or technology. It is our willingness to listen to each other and learn from eac….

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 f….

We can't control systems or figure them out. But we can dance with them!.

Speak the truth. Speak it loud and often, calmly but insistently, and speak it, as the Quakers say, to power. Material accumulation is not the pur….

Since the Earth is finite, and we will have to stop expanding sometime, should we do it before or after nature's diversity is gone?.

A system is a set of things people, cells, molecules, or whatever interconnected in such a way that they produce their own pattern of behavior over t….

Eleventh Commandment: Thou shalt not distort, delay, or sequester information.

The sustainability revolution will be organic. It will arise from the visions, insights, experiments and actions of billions of people. The burden of….

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

The first commandment of economics is: Grow. Grow forever. Companies get bigger. National economies need to swell by a certain percent each year. Peo….

Models can easily become so complex that they are impenetrable, unexaminable, and virtually unalterable..

A knowledgeable and courageous U.S. president could help enormously in leading the world's nations toward saving the climate..

The actions of my government are not bearable. They devastate our natural resources and deprive our people. The politicians speak piously while pract….

Any system, biological, economic, or social, that gets so encrusted that it cannot self-evolve, a system that systematically scorns experimentation a….

It is not OK in this culture to talk to friends about causes you believe in, much less to ask them to join in. It's OK to blast perfect strangers wit….

Biodiversity can't be maintained by protecting a few species in a zoo, or by preserving greenbelts or national parks. To function properly, nature ne….

There is too much bad news to justify complacency. There is too much good news to justify despair..

We don't think a sustainable society need be stagnant, boring, uniform, or rigid. It need not be, and probably could not be, centrally controlled or ….

You may be able to fool the voters, but not the atmosphere..