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Awe and wonder

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7 September 2023

6 min read

The heart of the matter

Heart doctor Michael Henein steps back to consider the unseen and unique wonders of the human body’s design.

Michael Henein

Professor Michael Henein is a consultant cardiologist, and a Professor of Cardiology at Umea University, Sweden.

A model of a human heart on a short stand.

Photo by Jesse Orrico on Unsplash.

Shakespeare famously asked:

“What a piece of work is a man, how noble in reason, how
infinite in faculties, in form and moving how express and admirable, in action how like an angel, in apprehension how like a god! the beauty of the world, the paragon of animals—and yet, to me, what is this quintessence of dust?

Humans may be complex, capable of great heroism and deep depravity, yet it is worth stopping for a moment to look at the human body and mind to marvel in what we have become, and how we are made.

The visible design of the human body points out common features shared along with other members of the animal kingdom. Examples of these features are: two eyes, two ears, two nostrils, one mouth and four limbs, attached to a body and head. Detailed study of different seen parts of the body may, however, show some differences. For example, the presence of fingers and nails, hair distribution as well as a developed tail. While most members of the animal kingdom have teeth and a tongue, those two could also vary in their number and size, respectively, according to different species. Genetic investigations have shown that we humans share 99 % of our genes with animals, suggesting that our “earthly” component shares a common origin. Indeed, the twenty first century scientific findings match what is written in the Genesis story of creation, a story written over 3,500 years ago, well before genetic sciences came to light.

Creatures great and small

As for morphological differences between animal species, it is difficult to naively conclude why some are wild while others are man-friendly-even if the wild ones have different shapes, design, dietary habits, body size and life span. Other important observed features of the members of the animal kingdom are that they are all born, they all age, then ultimately die.

If we are to look at the unseen features of the members of the animal kingdom, we can again identify similarities. For example, all have a gastrointestinal tract, a cardiovascular system, a reproductive system, a respiratory system, a urinary system and much more. While these systems may differ slightly between species, the overall structure and function achieve similar purposes. For example, heart speed is faster in small animals like rats compared to big ones like elephants who have very slow hearts. Likewise, the respiratory system and the number of respiratory cycles per minute are significantly faster in running animals compared to the sedentary and slowly moving ones. Finally, the number of offspring also differs in different species, being just one at a time in big animals like elephants and horses, and many offspring in small animals like rabbits and mice. Such paradox between the number of offspring and animal size makes you think of the important determining role of the activity of those animals.

Unseen wonders

Now to turn to the rest of the animal kingdom and the unseen features of the human body. To start, let us look at the amazing functions of the human brain and its various functions. When humanity is sometimes described as the crown of creation, such a description is based on the superiority of human brain function and skills. Its sophisticated structure and how vital centres are created deep in the skull, to be protected from traumas, make you marvel. Also, the brain controls the different functions of the whole body, with its sensory and motor activities, various vital system functions including the lungs and the heart, all endocrine glands’ function, in addition to various receptors and centres that allow utmost precision and accuracy in everything we do. An example of this kind of precision is a doctor feeling a vein or an artery with the tip of a finger to insert a needle or a musician moving a finger a few millimetres while playing a violin, to produce the exact sound needed. Furthermore, the integrated function of human muscles, nerves and spinal cord is also amazing, let alone the synapsis between the nerve endings and muscle bundles, the chemicals secreted in them which allow electric stimulus transmission from the nervous system to achieve the motor function and desired movement.

The human brain also has the unique feature of storing knowledge. Of course, we should not ignore the importance of the training and programming ability of human brain. We learn how to drive a car, how to play games, how to study, how to operate safely on a sick patient. Such acquired skills are quite limited in other members of the animal kingdom. Moreover, the human brain has the unique ability to invent, discover, improve and correct errors it identifies.

Another very unique feature of human brain is its ability to conduct speech, a feature of humans that is under-developed in other members of the animal kingdom. While most animals can make noise and sounds, only humans can articulate words, sentences and even sing very complex songs. This unique ability seems to be the underlying mechanism behind the development of languages which are based on the human ability to talk and transmit information and knowledge by words and phrases.

The unseen brain has allowed human life to develop over time, building skills and achievements from generation to generation. Millennia ago, humans lived in huts together with animals, and now they build houses and palaces to live in. Centuries ago, we used donkeys, horses and camels to travel but now we use cars, trains, ships and airplanes. Our ancestors burned wood and coal to cook and to warm but now we use electricity to do these.

When we look carefully at the unseen parts of the human body, we also realize that we cannot alter any of it, despite the scientific advances made over the years. We can understand what harms our body and take measures to avoid it. Out of the ability of our brain to discover and invent, we have now produced science-based means for curing various diseases. Consider how we can replace a dysfunctional heart valve or a mobility-limiting joint. These inventions have resulted in a better quality of life, alleviating of symptoms, even helping to avoid early death, in some cases such as heart disease and cancer.

The heart of the matter

Another unseen source of life in humans is the heart. This fist-size organ is so complex in its structure and function. Recent scientific advances have enabled us to study heart function in milliseconds, hence the development of pacemaker treatments. They have also allowed clear imaging of the inside of the heart and the identification of pathologies, developments that guide practitioners to the optimum treatment of heart conditions. Recent discoveries have also allowed us to better understand how people develop coronary artery disease and how the pathology starts at the innermost layer of the arteries, particularly in individuals carrying significant risks for atherosclerosis including, smoking, high blood pressure, diabetes, high cholesterol and obesity. Amazingly, obesity has been shown to be the strongest underlying cause of other risk factors, hypertension, diabetes and hypercholesterolemia. So, nature cannot be blamed in many of these patients but our own patterns of behaviour. Science has shown that walking at least 5,000 steps each day, complying with the design of our body, reduces the likelihood of developing coronary artery disease by 15 per cent.

The unseen physiology of the rest of our body systems and the interaction between systems make us wonder how we are made. A rise of our body temperature by one degree due to a bug infection affects all body systems from the brain to the heart. A virus which cannot be seen by the most powerful microscope can destroy our lungs and cause premature death, as was the case with COVID-19 and others.

Finally, human inventions in the form of powerful microscopes have allowed scientists to study the human cell, which is the smallest living component of our body. Such small cells cannot be replicated in any factory in the twenty-first century, despite the vast scientific developments that surround us. You'll be surprised to learn how complicated and meticulously fine-tuned a human cell is and also how it functions, connects with other cells and other parts of the body. An example of this is the interaction between body minerals, calcium, sodium and potassium with heart and muscle individual cells. Such a function is critically controlled by many factors such as time, electric stimulation and pressure differences producing remarkably harmonious contractions and relaxation of the muscles without missing a beat.

How to navigate a culture war

Blaise Pascal shows us what really underlies our contemporary battles.

Graham Tomlin

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

Maxime Gilbert on Unsplash.

We often say these days that we are more polarised as a society than ever before. But we're wrong. Maybe the USA is experiencing a particularly sharp divide right now, but they have had their own, much more violent troubles in the past. And in Europe, and especially in Britain, we know a fair bit about culture wars that were literally that – wars.

In the 17th century, we English had our own civil war where we literally killed each other over religion and politics. We even killed a king. The French did something similar and even more vicious just over 100 years later. That is real polarisation. However spiteful Twitter/X arguments may get, I don't think Charles III or even Kier Starmer is quaking in their beds expecting to be put on trial for treason.

So maybe our history has something to teach us about how we navigate culture wars.

The literary critic Terry Eagleton once wrote of our age:

“the world is accordingly divided between those who believe too much and those who believe too little. While some lack all conviction, others are full of passionate intensity.”

We tend to think our contemporary divide between left and right, progressives and conservatives is something new. But we can find echoes of this in previous times.

A case in point was the mid-17th century – the time of many other upheavals in Europe. Part of the febrile atmosphere of the time saw fierce arguments between rationalists and sceptics.

There were at the time, two broad strands of thinking about the human condition. On the one had there were the ‘Dogmatists’ who were sure that they knew everything through use of reason or the application of philosophical or scientific method (like René Descartes). On the other hand, there were the ‘Sceptics’ who thought everything was random, or custom, and there is no final Truth to be found (like a figure from the century before – Michel de Montaigne).

Of course, our own time has its fair share of people with an overwhelming confidence in the power of human knowledge, and the physical sciences in particular, to unlock the secrets of life, the universe and everything. The ‘new atheist’ project of Richard Dawkins and friends was hugely confident in reason and its capacity to tell us all we need to know, dispatching religion to the dustbin of history and instead placing an unshakable faith in the empirical methods of science. It had - and has - definite similarities with this picture of human knowledge.

Yet on the other hand we also have, in the progressive postmodern project, those who reject any kind of underlying rationality or sacred order either above us or beneath us. For them, there is no underlying Truth to be discovered, and they delight in revealing the instability and illusory nature of any claim to truth. It sounds very much like the culture wars of our time.

One enigmatic 17th century figure charted a way through this dilemma - Blaise Pascal. When he looked at his century’s culture war, he thought both sides had a point. There is, he observed…

…open war between men in which everyone is obliged to take sides, either with the dogmatists or with the sceptics, because anyone who imagines he can stay neutral is a sceptic par excellence…. Who will unravel such a tangle? This is certainly beyond dogmatism and scepticism, beyond all human philosophy. Humanity transcends humanity. Let us then concede to the sceptics what they have so often proclaimed that truth lies beyond our scope and is an unattainable quarry, that it is no earthly denizen, but at home in heaven lying in the lap of God, to be known only insofar as it pleases him to reveal it.

So far, he says, the sceptics, like Montaigne, are right. Truth is beyond our grasp, it does not reside here on earth, openly obvious and ready to be found. If it exists, it exists in some world above us, beyond our reach. How do we even know if we are asleep or awake, given that when we dream, we are as convinced that we are awake as we are when we are truly awake?

And so, modern progressives, looking to dismantle the assumed results of previous understanding, due to its inherent colonial, patriarchal or abusive past, delight in showing how random and arbitrary is so much of what we take for granted from the past. And, Pascal would add, they have a point. Many of our legal, political and cultural assumptions are purely cultural and arbitrary, and sometimes simply serve to the advantage of the rich and powerful rather than the poor and marginalised.

Yet on the other side, the ‘dogmatists’, like Descartes, have their strong point, which is that we cannot doubt natural principles. The acids of deconstruction can only take you so far. The most sceptical philosopher still puts the kettle on assuming that it will boil to make a cup of tea. She gets up in the morning assuming that the sun will rise and set again at the end of the day. Despite the corrosive effects of scepticism, Pascal wrote,

“I maintain that a perfectly genuine sceptic has never existed. Nature backs up helpless reason and stops it going so wildly astray.”

Despite all our doubt, we still live in a world with order and predictability. Scepticism keeps bumping up against reality.

So, modern conservatives point to a deeper ‘givenness’ to things, an order within the natural world that we did not create, and yet, mysteriously, seems to be prearranged before we got here. Scientific exploration does make sense. There is a regularity to nature that we can, indeed have to, depend on. Sexual differences exist and can’t be ignored. We are not entirely free to override the natural order of things - there is a deeper rhythm to nature and its capacity for renewal that we only mess with at our peril, as climate change has taught us. As a result, the age-old battle between rationalists and sceptics, progressives and conservatives, will never find resolution, as the arguments flow back and forth.

Christian faith includes both progressive and conservative impulses. It can make sense of both of them. Christians are aware of the brokenness of the world and therefore long to see it changed. The progressive impatience with the way things are, and the yearning for a better world has its roots in Christian faith.

Yet at the same time, Christianity discerns a divinely created order to the world, a rhythm to the natural world, that cannot be broken and needs to be respected. Therefore, an inherent conservatism is part of Christian faith as well. In other words, the Christian story can explain both and offer a bigger picture than either.

For Pascal, Christianity offers a diagnosis for this mystery of the human condition, the complex mix of grandeur and misery, infinity and nothing, sceptic and rationalist, in the simple, yet endlessly generative idea that we humans are gloriously created, deeply fallen and yet offered redemption through Jesus Christ. Our sadness is heroic and tragic. In Pascal’s suggestive image, it is “the wretchedness of a great Lord, the wretchedness of a dispossessed king.”

“We show our greatness,” says Pascal, “not by being at one extreme, but by touching both at once and occupying all the space in between.” For him, the very existence of such culture wars points to the truth of the Christian diagnosis of the human condition.

Pascal offers us a way between the Scylla of Progressivism and the Charybdis of Conservatism – or perhaps better, to embrace the best of both. Culture wars are tricky to navigate. Yet they might find resolution if we allow them to point us to a deeper reality - our strange mixture of greatness and sadness. And not losing sight of either side of this enduring truth.

Graham Tomlin is the author of Blaise Pascal: The Man Who Made the Modern World (Hodder) £25.

Watch Graham explain why he is fascinated by Pascal.

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