What motivates me is the conviction that our problems are mainly a consequence of a lack of holistic understanding of the man-made system in which we are entwined.

One of the best ways of reducing both CO2 emissions and poverty in the South would be to strengthen the existing, decentralised demographic pattern by keeping villages and small towns alive. This would allow communities to maintain social cohesion and a closer contact with the land.

At a deep psychological level, convincing young people that they will get the respect, admiration, love that they are looking for through consumerism is a manipulation of a deep human instinct to want to belong.

Happiness, as a word, has become sort of equated with these smiling images on television, selling some nice cream or food product or something. It's seen a bit as being a stupid consumer.

America must not abdicate its global leadership role in the climate crisis to countries like China.

There is hardly a place on Earth where people do not log, pave, spray, drain, flood, graze, fish, plow, burn, drill, spill or dump. There is no life zone, with the possible exception of the deep ocean, that we are not degrading.

Congressional Republicans are dismantling the limited environmental protections initiated by Richard Nixon, who would be something of a dangerous radical in today's political scene.

You know, Chevron - we don't do original research on climate change. It's the government's role to do that, and we accept the determinations that are there.