Nobody admirers a hijacker, so I’m being imprecise, at best, when I opine that “environmentalists have hijacked sustainability.” I don’t meant to impute evil at all — hell, until very recently, I’d have self-identified as one, and our aims still essentially align. And I don't mean it literally.

A central part of the message I deliver to audiences is that nature is the only teacher of sustainability we will ever need. It’s been sustaining life on earth for 3.8 billion years, while humans have been upright only for about 200,000 years; the experience gap is obvious.

 I am not, of course, the originator of this idea, that humans are part of nature, not apart and certainly not above it, and the most prudent direction for all of us is to follow nature’s lead. I wouldn’t cast that as an absolute, but only because absolutes are bad every time.