Article
Art
Culture
5 min read

Witnessing the unseen: why cave art captivates us

Iwan Russell-Jones recounts the discovery of stone age art that still connects 30,000 years after its creation.
A cave wall drawing of wild animals galloping across other images of themselves.
Animals on the wall of Chauvet Cave.

Late on a winter’s afternoon in December 1994, a group of three French cavers received the kind of Christmas present that most spelunkers can only dream of. They were exploring a cave system that they had just discovered in a deep gorge in southeastern France, and were already delighted by some of the natural geological formations that they’d seen. Suddenly they emerged into a large cavern and found themselves standing in front of a series of wall paintings that took their breath away. In the feeble beams of light from their torches the three explorers were stunned to see huge painted panels swarming with vibrant, beautifully crafted images of animals, including species like mammoths, lions and rhinoceros that had long been extinct in Europe.  

The only way in and out of the cavern was through a series of narrow passageways and shafts. So, these experienced explorers understood immediately that the paintings must have been created in the Stone Age and that they were probably the first people in tens of thousands of years to see them. They had made a spectacular archaeological discovery and Chauvet Cave - named after the group’s leader, Jean-Marie Chauvet - quickly took its place alongside Altamira and Lascaux as one of the most important sites of prehistoric art. 

Although the cavers were very much aware of the historical and scientific value of their discovery, what really overwhelmed them was the nature and quality of the images. In their book, The Chauvet Cave: The Oldest Known Paintings in the World (London: 1996), Chauvet and his colleagues described their feelings in this way:  

“During those moments there were only shouts and exclamations; the emotions that gripped us made us incapable of uttering a single word…. Everything was so beautiful, so fresh, almost too much so. Time was abolished, as if the tens of thousands of years that separated us from the producers of these paintings no longer existed. It seemed as if they had just created these masterpieces. Suddenly we felt like intruders. Deeply impressed, we were weighed down by the feeling that we were not alone; the artists’ souls and spirits surrounded us. We thought we could feel their presence; we were disturbing them.”  

These modern explorers felt strongly connected across an almost unimaginable chasm of time to the people who had once frequented the cave, and at the heart of this vivid sensation was the images they had created. This is a remarkable thing to consider. ‘Presence’ is certainly a quality that contemporary lovers of art look for and admire in paintings. When viewers stand in front of an original work by the likes of Caravaggio or Van Gogh or Chagall, they often experience a very powerful connection with them. They see their brushstrokes, marvel at their distinctive technique, and get a strong sense of their personal investment in the work, their individual genius and vision. It’s as if the artists are very much alive and kicking and still making their presence felt. Jean-Marie Chauvet and his colleagues had an electrifying sense of that on their first encounters with the cave paintings.  

Many of the painted caves discovered across France and Spain have a shrine-like quality and contain evidence that rituals of one kind or another were practised in them. 

But the notion of ‘presence’ in art goes way beyond the artist’s personal charisma and touches on an even more profound matter - the feeling that one is somehow being confronted by the mystery and reality at the heart of life. It’s an understanding of presence that modern people, in their enthusiasm for the individual brilliance and skill of artistic superstars, can sometimes overlook. But it’s an important dimension of palaeolithic art which cannot be ignored. The painters of Chauvet Cave were clearly captivated by the multitude of creatures who shared the world with them. Their imaginations were stirred by the grace of the ibex, the power of the bison, the dignity of the horse, the inquisitiveness of the bear, the ferocity of the lion, and their close observation of these animals is striking. There can be little doubt that the behaviour and characteristics of these fellow creatures led them to reflect on the meaning and significance of their own lives. And underlying all of this is a quality of wonder in their paintings, a sense of what the Jewish philosopher, Abraham Heschel, called ‘radical amazement’ at the sheer fact of being alive in such an extraordinary and beautiful world. 

Of course, we’ll never know exactly what was in the minds of these ancient artists as they were busy creating their masterpieces twenty thousand years before writing was invented. But archaeologists and anthropologists are convinced that the cave paintings are intimately linked with the beliefs and rituals of Stone Age peoples, and that this was their way of connecting with unseen spiritual realities. Many of the painted caves discovered across France and Spain have a shrine-like quality and contain evidence that rituals of one kind or another were practised in them. It seems that when these people went deep underground to create their images, it was in the belief that they were immersed in, and surrounded by, spiritual power and meaning. As scholar David Lewis-Williams puts it, ‘Every image made hidden presences visible’.

 Art still has this power. In the modern world it is rarely produced for overtly religious or ritualistic purposes. Nevertheless, art of any era cannot but bear witness to the unseen, sometimes in ways of which the artists themselves are not aware. Whatever their own philosophical and religious convictions may be, artists who labour in the fields of truth and beauty and meaning cannot help but create work that is allusive and open to transcendence. They cannot avoid the untameable and disruptive presence of their Creator. This will come as no surprise to anyone who has read the Psalms:  

Where can I go from your Spirit? Where can I flee from your presence? If I go up to the heavens, you are there; if I make my bed in the depths, you are there also…  

 The understanding of reality found in the Bible leads to a recognition that wherever people may be on the face of the planet and at whatever point they stand in the long, long history of the human race, they are always in the presence of, and confronted by, the Great I Am, who is the Lord of all times and places. 

The spelunkers of Chauvet Cave received an extraordinary gift at Christmas 1994, and through their discovery the rest of the world has been its beneficiary too. It’s a truly wonderful thing to have been given this glimpse into the lives of people so long ago, and through their creative endeavours to recognise our common humanity and the abiding power of art and the imagination. And at the heart of this present to us all was a presence that Jean-Marie Chauvet and his friends felt so vividly. But they were only partly right in linking that sense to the creative artists. For beyond those ancient cave painters is the object of their concern, the One who, as the Welsh poet, Waldo Williams put it, stands before us all as ‘Each witness’s witness, each memory’s memory, life of every life’ - the Presence behind all presence. 

Explainer
Biology
Culture
Ethics
9 min read

Ethics needs to catch-up with genetic innovation

Are we morally obliged to genetically edit?

John is Professor Emeritus of Cell and Molecular Biology at the University of Exeter.

An artistic visualisation of a DNA strand growing flowers from it.
Artist Nidia Dias visualises how AI could assist genomic studies.
Google Deepmind via Unsplash.

It makes me feel very old when I realise that Louise Brown, the first baby to be born via in vitro fertilisation (IVF), will be 47 years old on July 25th this year. Since her birth in 1978, over 10 million IVF-conceived babies have been born worldwide, of whom about 400,000 have been in the UK. Over that period, success rates have increased such that in some clinics, about 50 per cent of IVF cycles lead to a live birth. At the same time, there have also been significant advances in genetics, genomics and stem cell biology all of which, in relation to human embryos, raise interesting and sometimes challenging ethical issues. 

I start with a question: what is the ‘moral status’ of the early human embryo? Whether the embryo arises by normal fertilisation after sexual intercourse or by IVF, there is a phase of a few days during which the embryo is undergoing the earliest stages of development but has not yet implanted into the wall of the uterus; the prospective mother is not yet pregnant. In UK law, based on the Human Fertilisation and Embryology Act (1990), these early embryos are not regarded as human persons but nevertheless should be treated with some respect. Nevertheless, there are some who oppose this view and believe that from the ‘moment of conception’ (there actually isn’t such a thing – fertilisation takes several hours) embryos should be treated as persons. In ‘conventional’ IVF this debate is especially relevant to the spare embryos that are generated during each IVF cycle and which are stored, deep-frozen, in increasing numbers for possible use in the future.  

A further dimension was added to this area of debate when it became possible to test IVF embryos for the presence of genetic mutations that cause disease. This process is called pre-implantation genetic diagnosis and enables prospective parents who are at known risk of passing on a deleterious mutation to avoid having a child who possesses that mutation. But what about the embryos that are rejected? They are usually discarded or destroyed but some are used in research. However, those who hold a very conservative view of the status of the early embryo will ask what right we have to discard/destroy an embryo because it has the ‘wrong genes’. And even for the many who hold a less conservative view, there are still several questions which remain, including ‘which genetic variants we should be allowed to select against?; should we allow positive selection for genes known to promote health in some way?’; should we allow selection for non-therapeutic reasons, for example, sporting prowess?’ These questions will not go away and there are already indications that non-therapeutic selection is being offered in a small number of countries. 

Genetic modification 

This leads us on to think about altering human genes. Initially, the issue was genetic modification (GM) which in general involves adding genes. GM techniques have been used very successfully in curing several conditions, including congenital severe immune deficiency and as part of treatment programmes for certain very difficult childhood cancers. One key feature of these examples is that the genetic change is not passed on to the next generation – it just involves the body of someone who has already been born. Thus, we call them somatic genetic changes (from the Greek, sōmatikos, meaning ‘of the body’).  

Genetic modification which is passed on to the next generation is called germline GM which means that the genetic change must get into the ‘germ cells’, i.e., the sperm or egg. Currently, the only feasible way of doing this is to carry out the genetic modification on the very early embryo. At present however, with just one very specific exception, GM of human embryos is forbidden in all the countries where it would be possible to do it. There is firstly the question of deciding whether it is right to change the genetic makeup of a future human being in such a way that the change is passed to succeeding generations. Secondly, there are concerns about the long-term safety of the procedure. Although it would involve adding specific genes with known effects, the complexity of genetic regulation and gene interactions during human development means that scientist are concerned about the risks of unforeseen effects. And thirdly, germline GM emphasises dramatically the possibility of using GM for enhancement rather than for medical reasons.  

Genome editing 

This leads us to think about genome editing. In 2011, it was shown that a bacterial system which edits the genomes of invading viruses could also work in other organisms This opened up a large array of applications in research, agriculture and medicine. However, the ethical issues raised by genome editing are, in essence, the same as raised by GM and so there is still a universal prohibition of using the technique with human embryos: germline genome editing is forbidden. Despite this, a Chinese medical scientist, He Jiankui, announced in 2018 that he had edited the genomes of several embryos, making them resistant to HIV; two babies with edited genomes had already been born while several more were on the way. The announcement caused outrage across the world, including in China itself. He Jiankui was removed from his job and then, after a trial, was imprisoned for three years; his two colleagues who collaborated in this work received shorter sentences. 

At present the universal prohibition of human germline genome editing remains in place. However, the discussion has been re-opened in a paper by an Anglo-Australian group.  They suggest that we need to develop heritable (i.e. germline) polygenic genome editing in order to reduce significantly an individual's risk of developing degenerative diseases. These includecoronary artery disease, Alzheimer’s disease, major depressive disorder, diabetes and schizophrenia. I note in passing that one of the authors is Julian Savulescu at Oxford who is already well-known for his view that parents who are able to do so, are ‘morally obliged’ to seek to have genetically enhanced children, whether by PGD, GM or genome editing. The use of polygenic editing, which would, in all likelihood, be available only to the (wealthy) few, fits in well with his overall ethical position. Needless to say, the paper, published in the prestigious journal Nature, attracted a lot of attention in the world of medical genetics. It was not however, universally welcomed – far from it. Another international group of medical scientists and ethicists has stated that ‘Human embryo editing against disease is unsafe and unproven …’ and even go as far as to suggest that the technology is ‘… going to be taken up by people who are pushing a eugenics agenda …’ remain very pertinent. 

Harder still and harder 

I have no doubt that amongst different reader there will be a range of opinions about the topics discussed so far. For anyone who is Christian (or indeed an adherent of almost any religious faith), one of the difficulties is that modern science, technology and medicine have thrown up ethical questions that could not have even been dreamed of by the writers of the Bible (or of other religious texts). We just have to use our wisdom, knowledge and general moral compass (and for some, prayer) to try to reach a decision. And if what I have already written makes that difficult, some recent developments multiply that difficulty still more.  

In the early years of this century, scientists developed methods of transforming a range of human cells into ‘pluripotent’ stem cells, i.e., cells capable of growing into a wide range of cell types. It also became possible to get both induced stem cells and natural stem cells to develop into functional differentiated cells corresponding to specific body tissues. This has huge potential for repairing damaged organs. However, other applications are potentially much more controversial. In 2023, Cambridge scientists reported that they had used stem cells to create synthetic mouse embryos which progressed at least as far as brain and heart formation within the normal pattern of mouse embryo development. 

At about the same time, the Cambridge group used individual human embryonic stem cells (from the blastocyst stage of embryonic development), to ‘grow’ early human embryos in the lab. There is no intention to use these embryos to start a pregnancy – indeed, it would be illegal to do so – but instead to study a period of embryo development which is not permitted with ‘real’ human embryos (research must not continue past 14 days of development). But how should we regard synthetic embryos? What is their moral status? For those who hold a conservative view of the normal human embryo (see earlier), should we regard these synthetic embryos as persons? Neither does the law help us. The legal frameworks covering in vitro fertilisation and early embryos (Human Fertilisation and Embryology Acts, 1990, 2008) do not cover artificial embryos – they were unknown at the times the legislation was drawn up. Indeed, synthetic embryos/embryo models are, in law, not actually embryos, however much they look like/behave like early embryos. Earlier this month, the Human Fertilisation and Embryology Authority (HFEA) discussed these developments with a view to recommending new legislation, but this will not dispel an unease felt by some people, including the science correspondent of The Daily Telegraph, who wrote that this research is irresponsible.  

But there is more. In addition to synthetic embryos, the HFEA also discussed, the possible use of gametes – eggs and sperm – grown from somatic stem cells (e.g., from skin) in the lab. Some authors have suggested that the production of gametes in vitro is the ‘Holy Grail’ of fertility research. I am not so sure about that but it is clear that a lot of effort is going into this research. Success so far is limited to the birth of several baby mice, ‘conceived’ via lab-grown eggs and normal sperm. Nevertheless, it is predicted that lab-grown human eggs and sperm will be available within a decade. Indeed, several clinicians have suggested that these ‘IVGs’ (in vitro gametes) seem destined to become “a routine part of clinical practice”.  

The lab-grown gametes would be used in otherwise normal IVF procedures, the only novelty being the ‘history’ of the eggs and/or sperm. Clinicians have suggested that this could help couples in which one or both were unable to produce the relevant gamete, but who still wanted to have children. In this application, the use of IVGs poses no new ethical questions although we may be concerned about the possibility of the gametes carrying new genetic mutations. However, some of the more wide-ranging scenarios do at the least make us to stop and think. For example, it would be possible for a same-sex couple to have a child with both of them being a genetic parent (obviously for males, this would also involve a surrogate mother). More extremely, a person could have a child of which he or she was actually, in strictly genetic terms, both the ‘father’ and the ‘mother’. What are we to make of this? Where are our limits?  

Dr Christopher Wild, former director of International Agency for Research on Cancer, explores in depth many of the developments and issue I outlined above. His article on why a theology of embryos is needed, is clear, well-written, helpful and thought-provoking. 

 

This article is based on a longer blog post with full footnotes.  

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