If something is sustainable, it means we can go on doing it indefinitely. If it isn't, we can't.

Peace, non-violence, human rights and the environment - if only everybody saw these as the seamless whole that they are.

I think we will work our way towards a position that says that having more than two children is irresponsible..

We are now running out of time, and the question now is not what is happening to the climate, but how bad will it be before the world starts doing en….

I am unapologetic about asking people to connect up their own responsibility for their total environmental footprint and how they decide to procreate….

It's not enough simply to wear the badge of corporate responsibility. Business must accept that real change is the only response to climate change an….

Humankind's greatest priority is to reintegrate with the natural world..

"The ultimate recession": a recession caused not by failed regulation and bankers' greed, but by very high oil prices, food and water shortages, disa….

The collapse of the world's banking system and the impending disaster of accelerating climate change are not separate phenomena. They are simply the ….

As more and more people wake up to the fact that further growth does not necessarily bring improvements in quality of life (and often exactly the opp….

...the core values that underpin sustainable development - interdependence, empathy, equity, personal responsibility and intergenerational justice - ….

The huge arrogance of the companies developing GMO crops and their determination to destroy the line of accountability which links the developer to t….

Many ideas have struggled over the centuries to dominate the planet. Fascism. Communism. Democracy. Religion. But only one has achieved total suprema….

...deficit consumption is, in effect, drawing down on the capital entitlements of future generations.

A combination of very rapid population growth over the last 50 years and reckless economic growth during the same time has stored up massive problems….

The World Health Organization recently published some data showing that each overweight person causes and additional one tonne of CO2 to be emitted e….

What may be possible for a minority of humankind, albeit at great cost, simply cannot work for the humankind. Our kind of progress depends on lacerat….

Climate change is not an environmental issue, but much more to do with security and economics.

Keeping people on side is a precondition of making any progress on sustainability issues.

The future will be green, or not at all.

We're never going to scare people into living more sustainably! We have to be able to demonstrate just how dynamic and aspirational such a world coul….