It is interesting that he accepts the traditional concept that Bill Moyers refers to, that human beings are "the crown jewel of all creation."  "In a way we are," he says, because (to paraphrase) we are the only ones with the power to reflect reasonably on the passage of time, on the long-term relationship of causes and effects, and on how the future will be both like and unlike the present.

At the same time, he recognizes that starting with the Agricultural Revolution of ca. 10,000 years ago, human beings have pretty much relentlessly and most unreasonably been driven to greater and greater civilization (which, he says, is good in itself) and more and more consumption (which must absolutely be checked).  The end of nature is in sight.  He uses the important and frightening image of the juggernaut only once, and some of us would wish that he had given it greater emphasis.

In fact his persistent hopefulness might suggest to some environmentalists that he is not serious.  He quotes the Israeli statesman Abba Eban, saying at the time of the Six-Day War, "When all else fails, we try reason" -- as though he is confident that this time too, we are going to try reason.  But is it reasonable for him to be so confident?

He indicates the urgent need for leadership.  That deserves to be analysed a bit.  Does that mean only that we need directors of policy who are intelligent, clear-sighted, energetic and committed to the common good?  Does it not also mean that many others must be willing to surrender some of their autonomy?  The matter should be debated.

Chickens deserve our true friendship! So do fish! So do other sentient beings! Let us learn to be kind.