Column
Biology
Creed
7 min read

Not just red in tooth and claw: biology's big debates

In the second of a series, biologist and priest, Andrew Davison, examines why it’s important to keep up with biology’s big debates.

Andrew works at the intersection of theology, science and philosophy. He is Canon and Regius Professor of Divinity at Christ Church, Oxford.

An osprey, in flight, holds a fish in its claws.
‘Wherever there’s water or air to navigate, the laws of fluid dynamics are bound to throw up wings, and bodies shaped like fish.’
Photo by Mathew Schwartz on Unsplash.

There’s hardly been a livelier time for evolutionary science than today; indeed, passions can run high. It’s not that Darwin’s vision of evolution is fundamentally in doubt: species adapt by natural selection, there’s variation between individuals, and those better adapted for their environment survive more often, passing on their genes to their children. In that, the theory of evolution stands, but many other parts of the evolutionary picture from the second half of the twentieth century are coming under criticism. That includes the following maxims:  

‘the only significant form of inheritance involves genetic code’, 

‘nothing that happens to an organism during its lifetime is passed on to its progeny’,  

‘we agree what we mean by “species”’,  

‘genes pass down the branches of the tree of life, not between them’,  

and ‘evolution is fundamentally all about competition, not cooperation’. 

Among the excellent crop of writers on these themes, Eva Jablonka and Marion Lamb stand out for their elegant prose, and a gift for communicating complex ideas clearly. As they recognise, the standard mid-twentieth century model of evolution might be worth criticising, but it’s also landed all sorts of important basic points. (They list ten.) The shortfall of the earlier, dominant theory was in being too narrow, with each insight too quickly eclipsing others.  

Here are two examples. First, the classic twentieth century picture saw inheritance in terms of DNA and genes, passed on by ‘germline’ cells, such sperm and pollen. That’s all true, but it shouldn’t restrict our wider view of inheritance to that. Today, writers such as Jablonka and Lamb stress that organisms inherit from their parents (or parent) in all sorts of ways.  

A second plank of the twentieth century picture is that evolution involves descent from a common ancestor. Again, that says something vital, even central, accepted by evolutionist old and new. The twentieth century position, however, added a restriction: that’s all that’s important on this score. The newer perspective recognises that while genes are – of course – central, and passed on from parent to child, organisms also swap genes between themselves (between branches of the tree of life, not just along those branches), even between very different species. 

If we’re not careful, what’s written and taught (not least by theologians), even with the best will in the world, will be thirty or even fifty years out of date. 

There’s a lot of excitement around these sorts of claims (and, remember, Jablonka and Lamb make eight more), and that can get quite noisy. Defenders of the older, narrower picture typically say that the newer themes are simply fuss over minor points. Advocates of the newer perspective disagree, saying that the twentieth century picture risks missing some important features of biology, which are now coming into better focus. 

Why such debates matters 

Why might this ferment among biologists matter for a site like this one, and for theologians, and discussions of religious matters? Well, for one thing, as I pointed out in my previous article, nothing quite dissolves the supposed animosity between science and religion (which is, after all, a relatively recent invention) like theologians and religious people getting excited about biology. It’s also important that any humanities scholar, the theologian among them, who’s engaging with science should keep up to date. If we’re not careful, what’s written and taught (not least by theologians), even with the best will in the world, will be thirty or even fifty years out of date. 

But there’s more at stake. As we have seen, the twentieth century picture, for all it brought an admirable clarity to evolutionary thought, was reductionistic. We see that in Jablonka and Lamb’s exhortation to scientists: ‘yes, stress x, but don’t think that means you have to deny y.’ A religious vision tends to be an expansive one. It wants to recognise the reality and value of all sorts of things. Yes, there’s matter, atoms, molecules, and genes, but there’s also organisms, agents, cultures, groups, economies, hopes, loves. They’re all real. We can’t reduce one to the other: not organisms to genes, or agents to economies. A turn from reduction is welcome. 

More than that, almost everything in the emerging twenty-first century view of evolution is fascinating from a theological perspective.  

Take convergence, for instance. It turns out that evolution isn’t just driven by randomness, or by the demands of the surroundings. Also important are various features of physics, or mathematics – the contours of reality – that throw up elegant solutions to evolutionary problems, which are adopted by evolution time and again. Wherever you need to sturdy and space-efficient packing of cells (as in a honey comb, or a a wasp’s nest), the hexagon is ready and waiting.  Wherever there’s water or air to navigate, the laws of fluid dynamics are bound to throw up wings, and bodies shaped like fish, dolphins, and penguins (which are all quite similar in shape).  

How do we know this? Because evolution has converged on wings and that body shape independently, many times, as also on eyes, and everything else that Simon Conway Morris lists in the nine closely printed columns of convergences in the index to his book Life’s Solution. Evolution certainly involves randomness and need, but alongside them is something more like Plato’s forms: timeless realities, there to be discovered and put to work. Among the more theological of these eternal verities, covered in Conway Morris’s book, are perception, intelligence, community, communication, cooperation, altruism, farming, or construction 

 Exceeding a zero-sum game 

Then there’s cooperation. Ever since Darwin’s Origin was published, and, even more, ever since Tennyson wrote about nature ‘red in tooth and claw’, theologians have been embarrassed about the place of cooperation in their vision of the world. Now, however, it turns out, competition isn’t the only force at work in biology or evolution after all. One of the features of reality that evolution discovers and puts to work again and again is cooperation, and ways to exceed a ‘zero-sum’ game. We see that in cooperation within a species, but also in cooperation between species, which is ubiquitous in nature: called mutualism, it’s found everywhere. As a rule, once two species stick around in proximity for the long run, down many generations, their relationship will turn to mutual benefit.  

Ethicists are often wary of the suggestion that we can look at the way things are, and read a moral code there (getting an ‘ought’ from an ‘is’), but it’s an unusual person whose vision of right and wrong isn’t shaped, to some degree, by a sense of what the world is like. Well, it turns out that nature bears witness to the enduring worth of cooperation, and not only to competition.   

In the first of these articles on biology, I pointed out the significance of ethics in thinking about biology, and about evolution in particular. For better or worse, and often for worse, thinking about evolution has been an ethical, social, political story. The evolutionary has been put to work for immoral, ends. It turns out to be wrong twice over to suppose evolution commends only competition. It’s wrong, first of all, because we are rational creatures, who can aspire to an understanding of good and evil that transcends the realm of nature. But also, as we now see, it’s wrong even to suppose the nature is only red in tooth and claw. There’s competition, but there’s also a lot of cooperation.  

 

Suggested further reading 

Archibald, John. 2014. One Plus One Equals One: Symbiosis and the Evolution of Complex Life. Oxford: Oxford University Press. An accessible introduction to biological mutualism, with an emphasis on the role of hybrid organisms (one living inside another) in major evolutionary transitions. 

Bronstein, Judith L., ed. 2015. Mutualism. Oxford: Oxford University Press. The new standard treatment of biological mutualism. 

Morris, Simon Conway. 2008. Life’s Solution: Inevitable Humans in a Lonely Universe. Cambridge: Cambridge University Press. A comprehensive discussion of convergence in evolution. 

Day, Troy, and Russell Bonduriansky. 2018. Extended Heredity: A New Understanding of Inheritance and Evolution. Princeton, NJ: Princeton University Press. An engaging introduction to a broadened picture of inheritance. 

Davison, Andrew. 2020a. Biological Mutualism: A Scientific Survey. Theology and Science 18 (2): 190–210. An accessible survey of some of the science of biological mutualism. 

———. 2020b. Christian Doctrine and Biological Mutualism: Some Explorations in Systematic and Philosophical Theology. Theology and Science 18 (2): 258–78. A foray into some of the significance of mutualism for Christian theology. 

Jablonka, Eva, and Marion Lamb. 2020. Inheritance Systems and the Extended Synthesis. Cambridge University Press. A short discussion of many of the more expansive aspects proposed for contemporary evolutionary thought. 

Jablonka, Eva, Marion J. Lamb, and Anna Zeligowski. 2014. Evolution in Four Dimensions: Genetic, Epigenetic, Behavioral, and Symbolic Variation in the History of Life. Revised edition. Cambridge, MA: MIT Press. One of the most substantial discussions of the new perspective. 

Laland, Kevin, Tobias Uller, arc Feldman, Kim Sterelny, Gerd B. Müller, Armin Moczek, Eva Jablonka, et al. 2014. Does Evolutionary Theory Need a Rethink? Nature 514 (7521): 161–64. MA short two-sided piece, asking whether a transformation in evolutionary thinking is under way.  

Article
Character
Creed
Leading
Politics
5 min read

World leaders can learn a lot from Pope Leo

Graham Tomlin was at the Pope's inauguration in Rome. This is what he noticed.

Graham is the Director of the Centre for Cultural Witness and a former Bishop of Kensington.

A VIP couple stand and talk with the Pope.
Usha and J.D. Vance meet the Pope after his inauguration.
Vatican Media.

On Sunday morning, along with a host of bishops, patriarchs, priests and assorted others, I was led around the back of Peter's Basilica in Rome, into the cavernous spaces of that extraordinary building.

As we walked through the echoing church with the sunlight slanting through the windows like shafts of light from an angelic realm, our small group of Anglicans waited for our turn to walk out into the blinding sunshine. The names of the churches were ticked off like a game of ecclesiastical bingo: “Coptic Orthodox Church of Alexandria? OK.” Syriac Orthodox Church of Antioch? – This way please. “Armenian Apostolic Church – just wait a minute…” 

As we moved through the front doors of the Church, the first thing we saw was a crowd of 200,000 people stretching as far as the eye can see. Behind us was the imposing face of St Peter’s, that great monument to Catholic supremacy and authority. The world’s media looked down from the balconies above us. Opposite our seats were the rich red velvet chairs ready for President Zelensky, J.D. Vance, and the heads of state of numerous countries across Europe and beyond.  

As we walked out, I turned to a friend in our group, and instinctively said to him, “you'd need to be someone of remarkable humility not to let all this go to your head.” 

I couldn't help thinking of Robert Prevost, who was about to walk through these doors, a man who was made a bishop in 2015 - only became a cardinal two years ago, and was now to find himself the focus of rapt attention by this vast crowd and millions of others on TV, as the spiritual leader of 1.4 billion Catholics, catapulted from relative obscurity to being the most famous man in the world within a couple of weeks. 

St Peter’s is designed to impress. The piazza in front of the church is surrounded by imposing statues of apostles, saints, martyrs, and fathers of the church, all looking down on proceedings below. It was this church that inadvertently triggered the Reformation, as a fund-raising scheme for its construction involved selling some indulgences in Germany that raised Martin Luther’s fury. The frontage, with its soaring pillars, grand windows, sumptuous balconies and rich tapestries, is meant to overawe you. Inside, the space is huge, with vast windows letting in the light, stunning works of art everywhere. This was a display of the Renaissance papacy, leading into the Counter-Reformation, the confident Baroque spirit that announced the triumph of the Church over all its enemies. 

A Pope with a streak of vanity would be a dangerous thing. Everything points to the power of this position – the successor of Peter, the one on whom the rock of the Church was to be built; the leader of the largest body of Christians in the world; someone instantly recognisable across the globe, to whom world leaders have to come, cap in hand. No wonder some popes in the past have become political manipulators, vying with emperors and kings over who has more power.  

Yet these days, the Catholic Church sounds a humbler note. Pope Francis started the church down a line of ‘synodality’, inviting other voices into the church’s deliberations rather than just male priests. Pope Leo seems to want to continue down that line. 

Referring to his election he said: 

 “I was chosen, without any merit of my own, and now, with fear and trembling, I come to you as a brother, who desires to be the servant of your faith and your joy, walking with you on the path of God’s love.” 

The tone was not of self-aggrandisement, asserting the power of the position. There was no strategy to dynamically change the church and the world. No grand design to use the levers of power to shape society according to his vision. Instead, this was about unleashing a more elusive and uncontrolled force: the power of self-denying compassion.  

As Pope Leo put it: 

“The ministry of Peter is distinguished precisely by self-sacrificing love, because the Church of Rome presides in charity and its true authority is the charity of Christ. It is never a question of capturing others by force, by religious propaganda, or by means of power. Instead, it is always and only a question of loving as Jesus did.” 

Now that’s different from the way popes have sometimes spoken in the past. The Church has no power other than the power of love – the kind of self-sacrifice seen in the life of Christ. If the pope ‘presides’, as Presidents do, he ‘presides in charity’. A little different from some other Presidents I can think of.  

Admittedly we don’t know much about him yet, But Bob Prevost strikes you as a humble man. Someone who can turn down a place at Harvard Law School to go instead to serve the poorest communities in Peru for 20 years, sleeping on the floor of huts, travelling by donkey to remote villages, unnoticed and obscure, suggests a distinct lack of self-importance. You don’t canvas to become pope, announcing your candidacy, working your way up the ranks, arguing your merits to the electorate. Instead, you get on with what you do, and if the call comes, you follow it.  

As Pope Leo, he will need that humility as he takes on this role for the rest of his life. He will need it to resist the subtle lure of the deference others offer him, the adulation he will receive wherever he goes, the buildings he lives in, the magnificence of the popes who went before him, the way people will hang on his very word. The temptation to think that Bob Prevost is, after all, a mighty big fish, someone whose talents have got him to this point will be strong.  

But if he gives in to that temptation, he will slip back into the run of the mill way of the world, lording it over those he oversees. He seems aware of the slippery nature of such a position. Whoever was called to be the successor of St Peter, he said, needed to exercise oversight “without ever yielding to the temptation to be an autocrat, lording it over those entrusted to him. On the contrary, he is called to serve the faith of his brothers and sisters, and to walk alongside them." 

It was Jesus who said:

“Among the nations, their rulers lord it over them. But it is not so among you. Whoever wants to be great among you must be your servant.” 

Other Presidents, prime ministers and patriarchs could take a leaf out of that book.  

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