Explainer
Belief
Climate
Comment
Sustainability
7 min read

Living sustainably doesn’t have to be a burden, here’s the case for action

How not to get hot and bothered about climate change.

Barnabas Aspray is Assistant Professor of Systematic Theology at St Mary’s Seminary and University.

A protester holds up a green sign reading: 'It's hard to be green. Kermit'.
Markus Spiske on Unsplash.

The fundamental tenets of Christianity show why Christians are called to love not just one another but all created things. 

1. God is love. 

2. God created everything. 

Therefore, God loves everything he created.  

3. God appointed humanity as the guardians of creation. 

Therefore, a fundamental part of our identity and calling as human beings is to protect and sustain all that God created. 

This lies at the basis of everything Christians believe and do. But a case can be made that is more basic still because it appeals, not to anything distinctively Christian, but to natural human wisdom. The climate crisis is not a Christian crisis. It’s a crisis for everyone who cares about their future and that of our planet. The climate crisis may be something unprecedented in the history of humanity, but the principles that are needed to resolve it are not new at all. Sustainability is not a new or particularly abstruse idea. It is something everyone understands as basic common sense. If I cut down trees faster than they can grow, I won’t be able to do that forever. One day I will cut down the last tree and then there won’t be any more trees, ever again. If I catch fish faster than they can reproduce, then one day I will catch the last fish and then won’t be able to catch any more ever again.  

But it’s not only about foresters and fishermen. Since the dawn of humanity, we have been living sustainably – wisely preserving resources and using only what we can replace, so that we and our descendants can continue to live. This applies to everyone regardless of their profession. All of us, if we spend more money than we earn, are living in a way that cannot last for long. If we use resources at a faster rate than we can replenish them, we will run into trouble at some point in the future. Every person possessed of reason and common sense knows this intuitively without having to be taught it. Only someone seriously deluded, foolish, or with some kind of mental health problem fails to understand the need for sustainability in order to have any kind of future at all, let alone a pleasant future. 

The call to live sustainably can lead us to feel burdened by a permanent sense of guilt, a feeling that we ought to be doing more than we are... 

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We are burning fossil fuels at hundreds of times the rate they can be produced. We are producing plastics that cannot be recycled, meaning we have to dump them in landfills that are growing all the time. We are pouring carbon dioxide into the air faster than anyone can take it out. All of these things mean that there is a time limit on the kind of lifestyles we are all leading now. If we carry on in this way, then one day we will cross a line from which there is no returning. As Mark Scarlata has pointed out, the solution cannot be technological. Even if we find a way to balance carbon outputs with inputs, we are only kicking the can further down the road. Our inability to live within our means will simply resurface somewhere else later on. The problem is spiritual, not technical.  

Everyone understands this at some level even if it’s the kind of truth from which we prefer to avert our eyes. The harder problem is to understand why this basic common sense isn’t proving effective. Why are we living collectively in a way that only a foolish or insane person would live, when most of us taken by ourselves are neither foolish or insane? 

The problem, at least in part, is that we are all entangled in systems that make it very hard for us to live sustainably. If I am an ordinary Brit living in an ordinary town or city, and I need to buy toothbrushes or nappies or cucumbers or strawberries, I go to the local supermarket: and the only options available are made of plastic or wrapped in plastic that will not decompose for 500 years, and often brought here from the other side of the world using huge amounts of carbon emissions. Most of us are busy people with limited financial resources. We don’t have the time to find sustainable alternatives and often they are too expensive even if we can find them. The societal structures that we live in limit the choices we have. The call to live sustainably can lead us to feel burdened by a permanent sense of guilt, a feeling that we ought to be doing more than we are, but also an inability to see how we could be doing more given all the pressures, needs and constraints on our time and money. 

Christians do not naively believe that God will sweep in and fix everything if we just wait. That would be to deny our responsibility, and it is not what hope means. 

We are all culprits in part, since we all contribute to non-sustainable living. But we are also partly victims of forces beyond our control, large cultural forces that shape and determine our actions more than we can imagine. We have very little power over those structural forces and currently things do not look good. Common sense principles aren’t working. The climate crisis is only getting worse. So, what do we do?  

It is at this point that Christianity has something special to offer to the problem. 

First, Christians are never called to be defeatist or to throw in the towel. This is because we are called to an enormous hope, a hope that surpasses understanding, a hope that the world cannot understand because it stands over against all the odds and all the possibilities. This hope is rooted in the conviction that our God is God Almighty, that he has not abandoned his creation, and that he has power to save. He is a saviour. He is the God of our salvation. This is the God we believe in. The climate crisis may look bleak right now, but Christians need never despair or become indifferent. If we do our small part, we can trust that God is in control of what is out of our control.  

Secondly, Christians believe that every human being is a free agent with the capacity to choose how he or she will act. Our freedom may be limited by the societal structures that shape and constrain our choices, but it is not destroyed. We can still make choices within those limits to buy and live more sustainably – anything from choosing a holiday destination within driving distance, to giving up beef (by far the worst food for carbon emissions). There is something all of us can do.  

Thirdly, Christians believe in a God who transforms hearts and lives, winning them to the power of the gospel and to a new way of living that is free of the shackles that this world – the structures of society – puts on us. This transformation is slow – slower than we would like it to be sometimes. We feel the shackles still gripping us at times. We are not expected to change everything all at once, to become holy overnight. Nevertheless, God gives us the power to change our lives, and to become part of the solution rather than part of the problem. The way towards sustainable living is not to try to change everything at once, but to ask: what one thing can I change in my daily lifestyle that would make it more sustainable? And then once we’ve mastered that and integrated it so we no longer even think about it and it’s just a default, then we can ask: what’s the next thing I can do? All of a sudden what looks like an unimaginable height of transformation, when it is broken down, becomes a series of manageable steps.    

Even if we do everything in our power, we cannot by ourselves avert a possible catastrophe. We are small players in a big game. Christians do not naively believe that God will sweep in and fix everything if we just wait. That would be to deny our responsibility, and it is not what hope means. Hope means the opposite: that we continue to fight to avert climate disaster even when it seems hopeless. Christians are called to be part of the solution rather than part of the problem. We are called to live in such a way that, if catastrophe comes, it won’t be because of us – to live in hope that our actions are meaningful and worthwhile and that we are in the hands of a God who is far more powerful than the most powerful forces in this world. 

Article
Comment
Ethics
Politics
War & peace
5 min read

We must invest in defence, fast - it’s the only moral thing to do

The responsible use of force today precludes pacifism

Emerson Csorba works in deep tech, following experience in geopolitics and energy.

Amid a bombed alley, a victim is helped to walk by a rescue worker
Aftermath of a Russian drone attack, Odesa, Ukraine.
Dsns.gov.ua, CC BY 4.0, via Wikimedia Commons.

In May 2016, I was hiking the Southwest Coast Path in a group, trudging through dense forest between Lyme Regis and Weymouth, when a distinctly unsettling event occurred. As we moved along a narrow trail, a buzzing sound began—we assumed we had disturbed a bee’s nest. We quickened my pace, but the buzzing continued. Eventually, we emerged from the woods and looked up. The sound had not come from bees, but from a drone that had been following us.

I will never forget that sound; the eerie sense of something pursuing you, but unseen. In a recent BBC special on the war in Ukraine, a journalist documents the now-pervasive use of drones, the journalist and Ukrainian soldiers hiding under the cover of forest as a Russian drone scans the area, before escaping to their car in which an AI voice says ‘Detection: multiple drones, multiple pilots, high signal strength’ as they journey overground. This is the new era of covert warfare, where the enemy strikes without being easily identified. You hear the hum, but the source is elusive.

In the coming years, this kind of psychological warfare will make its way into Western cities. Terrorist attacks will shift from in-person confrontations—like the Novichok poisonings in Salisbury—towards remote, anonymous assaults: drones drifting from overseas into coastal cities to target civilians, or swarms carrying out mass attacks in dense downtown cores. The aim will be psychological trauma at scale. Civilians will grow hesitant to leave home, hyper-sensitive to the buzz of anonymous drones in their own areas. Iran recently declared that no US, British, or French base is safe from retaliation in the emerging Israel–Iran war. It is not difficult to imagine Western cities soon being viewed as legitimate targets.

We are entering a time of intensified conflict, with national security becoming the dominant framework for policymaking. The watchword of UK government policy is ‘security,’ and—writing now from Montréal—the recent Canadian election was framed around which party and leader could best protect Canadians from external threat. In this context, even domains once governed by cooperation are transformed into zero-sum contests, because national security framing by its nature shifts focus from reciprocity to limitation of the other. 

Free trade, for example - fundamentally the mutually beneficial exchange of goods and services as part of the creation of value - becomes, in a security-focused world, a question of containment. Trade, in a security-focused world, is turned on its head, free trade becoming trade wars. Fairness (in which the pie is grown and shared across multiple people) is replaced by interest, whether the interest of countries or communities and individuals within them seeking to protect themselves. As US–China competition escalates, we can expect human relations—among both states and citizens—to become even more zero-sum. 

In such an environment, do morals still matter? When the enemy grows more ruthless and more innovative in an era of national security, must we match them in kind? Or is it still possible to uphold principles while defending ourselves?

Restraint and humility are still critical virtues—but must not be mistaken for weakness.

In a recent Times column, Juliet Samuel suggested that gestures of non-aggression—such as Finland’s 2015 destruction of its one million landmine stockpile—now appear dangerously naïve. Ukraine, for its part, has rightly disregarded the Ottawa and Oslo (banning cluster munitions) conventions. Its survival depends on ingenuity, rapid technological development (for instance through the work of funds such as D3), and collaboration with its allies to prototype and deploy advanced systems.

Reinhold Niebuhr, in Moral Man and Immoral Society, contends that to be moral, one must possess the capacity for force—‘power must be challenged by power.’ That power, however, must be exercised with responsibility, humility, and moral purpose. Nigel Biggar, my former doctoral supervisor and a key figure in the Niebuhr tradition of Christian realism, argues in In Defence of War that war can be justified on balance when it meets the criteria of jus ad bellum: just cause, legitimate authority, right intention, proportionality, and reasonable prospect of success. 

War, in this reading, can express a ‘kind harshness’—a form of judgment exercised in defence of victims. Like Niebuhr, Biggar grounds his argument in Augustinian realism: the world is fundamentally good, yet broken. Because evil persists, the moral use of force becomes necessary to uphold what is right. I believe this to be true, and directly applicable to the national security-focused world in which we find ourselves. 

What does this mean then for Western countries as national security reasserts itself as the central organising principle of governance?

It means significant and urgent investment in defence and deep technology, including for instance emerging capabilities like cognitive warfare and neuroadaptive systems (wearables that enhance soldiers’ performance in live combat), counter-drone systems for urban, rural, and maritime environments, and next-generation electronic warfare and geospatial intelligence.

If drone attacks intensify at sea—such as those carried out by the Houthis to disrupt global shipping routes—counter-drone systems will be vital to ensure safe passage. In a world of manipulated narratives and disinformation, geospatial intelligence will serve as a source of truth, helping establish what is actually happening on the ground. And as agentic AI grows increasingly capable of manipulating users—through sycophancy, persuasion, and other techniques—oversight technologies like Yoshua Bengio’s new LawZero project will be essential for maintaining objectivity and integrity.

The responsible use of force today precludes pacifism, averting violence altogether. It means maintaining—and advancing—the capability for overwhelming force, so it is ready if needed. Morality in an era of national security demands investment in defence technologies at speed, to stay several steps ahead of adversaries. A ‘whole-of-society’ approach, as recommended in the recent UK Strategic Defence Review, means preparing citizens with such a mindset. Restraint and humility are still critical virtues—but must not be mistaken for weakness. Western nations must be prepared to act swiftly, decisively, and with the deterrent power that peace requires.

This is the world we are entering: one in which governments and civilians alike must be ready for unexpected threats. The hum of a drone overhead is more than a sound—it is instead a warning, reminding not only Ukrainians but those currently in peaceful situations, to prepare ourselves for potential conflicts to come. The appropriate response is not retreat, but the responsible and moral exercise of power: a necessary duty if we are to preserve peace, freedom, and justice in a world increasingly intent on contesting them.

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