Show caption Illustration: Bill Bragg Opinion For the sake of life on Earth, we must put a limit on wealth George Monbiot It’s not just the megarich: increased spending power leads us all to inflict environmental damage. It’s time for a radical plan @GeorgeMonbiot Thu 19 Sep 2019 06.00 BST Share on Facebook

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It is not quite true that behind every great fortune lies a great crime. Musicians and novelists, for example, can become extremely rich by giving other people pleasure. But it does appear to be universally true that in front of every great fortune lies a great crime. Immense wealth translates automatically into immense environmental impacts, regardless of the intentions of those who possess it. The very wealthy, almost as a matter of definition, are committing ecocide.

A few weeks ago, I received a letter from a worker at a British private airport. “I see things that really shouldn’t be happening in 2019,” he wrote. Every day he sees Global 7000 jets, Gulfstream G650s and even Boeing 737s take off from the airport carrying a single passenger, mostly flying to Russia and the US. The private Boeing 737s, built to take 174 passengers, are filled at the airport with around 25,000 litres of fuel. That’s as much fossil energy as a small African town might use in a year.

Where are these single passengers going? Perhaps to visit one of their superhomes, constructed and run at vast environmental cost, or to take a trip on their superyacht, which might burn 500 litres of diesel an hour just ticking over, and which is built and furnished with rare materials extracted at the expense of beautiful places.

Perhaps we shouldn’t be surprised to learn that when Google convened a meeting of the rich and famous at the Verdura resort in Sicily in July to discuss climate breakdown, its delegates arrived in 114 private jets and a fleet of megayachts, and drove around the island in supercars. Even when they mean well, the ultrarich cannot help trashing the living world.

‘Superyachts, built and furnished with rare materials, can burn 500 litres of diesel per hour just ticking over.’ The superyacht Aviva off the Cornish coast. Photograph: Simon Maycock/Alamy Stock Photo

A series of research papers shows that income is by far the most important determinant of environmental impact. It doesn’t matter how green you think you are; if you have surplus money, you spend it. The only form of consumption that’s clearly and positively correlated with good environmental intentions is diet: people who see themselves as green tend to eat less meat and more organic vegetables. But attitudes have little bearing on the amount of transport fuel, home energy and other materials you consume. Money conquers all.

Another issue is that wealth limits the perspectives of even the best-intentioned people. This week, Bill Gates argued in an interview with the Financial Times that divesting (ditching stocks) from fossil fuels is a waste of time. It would be better, he claimed, to pour money into disruptive new technologies with lower emissions. Of course we need new technologies. But he has missed the crucial point: in seeking to prevent climate breakdown, what counts is not what you do but what you stop doing. It doesn’t matter how many solar panels you install if you don’t simultaneously shut down coal and gas burners. Unless existing fossil fuel plants are retired before the end of their lives, and all exploration and development of new fossil fuel reserves is cancelled, there is little chance of preventing more than 1.5C of global heating.

But this requires structural change, which involves political intervention as well as technological innovation: anathema to Silicon Valley billionaires. It demands an acknowledgement that money is not a magic wand that makes all the bad stuff go away.

‘Bill Gates argued in an interview with the Financial Times that divesting (ditching stocks) from fossil fuels is a waste of time. But he has missed the crucial point.’ Photograph: Denis Balibouse/Reuters

Tomorrow, I’ll be joining the global climate strike, in which adults will stand with the young people whose call to action has resonated around the world. As a freelancer, I’ve been wondering who I’m striking against. Myself? Yes: one aspect of myself, at least. Perhaps the most radical thing we can now do is to limit our material aspirations. The assumption on which governments and economists operate is that everyone strives to maximise their wealth. If we succeed in this task, we inevitably demolish our life support systems. Were the poor to live like the rich, and the rich to live like the oligarchs, we would destroy everything. The continued pursuit of wealth in a world that has enough already (albeit very poorly distributed) is a formula for mass destitution.

A meaningful strike in defence of the living world is, in part, a strike against the desire to raise our incomes and accumulate wealth: a desire shaped, more than we are probably aware, by dominant social and economic narratives. I see myself as striking in support of a radical and disturbing concept: enough. Individually and collectively, it is time to decide what “enough” looks like, and how to know when we’ve achieved it.

There’s a name for this approach, coined by the Belgian philosopher Ingrid Robeyns: limitarianism. Robeyns argues that there should be an upper limit to the amount of income and wealth a person can amass. Just as we recognise a poverty line, below which no one should fall, we should recognise a riches line, above which no one should rise. This call for a levelling down is perhaps the most blasphemous idea in contemporary discourse.

But her arguments are sound. Surplus money allows some people to exercise inordinate power over others: in the workplace; in politics; and above all in the capture, use and destruction of the planet’s natural wealth. If everyone is to flourish, we cannot afford the rich. Nor can we afford our own aspirations, which the culture of wealth maximisation encourages.

The grim truth is that the rich are able to live as they do only because others are poor: there is neither the physical nor ecological space for everyone to pursue private luxury. Instead we should strive for private sufficiency, public luxury. Life on Earth depends on moderation.

• This article was amended on September 19 to remove an inaccurate reference to the world’s most expensive superyacht.