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

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.

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

The climate continues to deteriorate.

The grand jury's job is not to weigh the evidence from both sides; it is only to decide whether there is enough evidence on one side to bring a person to trial.

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

Why is our (US) government the only one in the civilized world with a stupid, short-term energy policy? Why do our elected officials consider a European or Japanese-type energy tax not only unpassable but undiscussable?