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Understanding the power of blood

From hospitals to hymn books, it's significant for a reason.

Helen is a registered nurse and freelance writer, writing for audiences ranging from the general public to practitioners and scientists.

A bag of blood connected to a drip.
Give blood.
Aman Chaturvedi on Unsplash.

With one billion molecules of oxygen packed into each of your 30 trillion red blood cells, blood is sometimes known as the red river of life. Countless lives have been saved through blood transfusion, but why, throughout history, across continents and cultures, has there been a special interest in the blood of one man crucified 2,000 years ago, believing it alone to have “wonder-working power”?  

Whether you are a newborn baby with half a pint of blood, or an adult with nearer nine pints, “what is certain is that you are suffused with the stuff”, writes author Bill Bryson in his book, The Body.  

Once thought to ebb and flow in waves like the sea, from the liver to other organs, having been heated in the heart, blood in fact flows in a network of vessels measuring some 60,000 miles, with the heart acting as pump, not heater. Cleverly conserved through a complex system of blood-clotting in the case of injury, blood is a precious resource that needs replacing if lost in large amounts. Victims of road traffic accidents can require up to fifty units of blood; significant amounts are needed for organ transplantation, severe burns or heart surgery. 

The first human blood transfusion in Britain, using blood from a lamb, was performed by Dr Richard Lower in 1667, given not to replace blood loss but to change character: could the old be made young, the shy be made sociable through blood transfusion? Apparently not.  

Safe transfusion awaited the discovery of blood types by Dr Karl Landsteiner in the early 20th century. Today, NHS Blood and Transplant deliver 1.4 million units of red cells to 260 hospitals each year for transfusion; about 85 million units are transfused worldwide, given to replace blood loss after accident, surgery, ulcer, ectopic pregnancy or for anaemia in cancer. Also used to boost blood cell numbers in malaria, sepsis, HIV, leukaemia and sickle cell anaemia, blood transfusion is now amazingly safe. Fatal reactions are extremely rare, “occurring only in one out of nearly two million transfusions”, writes physician Dr Seth Lotterman. “For comparison, the lifetime odds of dying from a lightning strike are about 1 in 161,000,” he adds. The risk of HIV infection has dropped dramatically, to less than one in seven million. 

History tells though of the danger of transmitting disease from the blood donor during transfusion. The World Health Organization recognises risk of infection with HIV, hepatitis, syphilis, malaria, and Chagas disease. The Contaminated Blood Scandal saw an estimated 30,000 people in the UK given blood transfusions and blood products infected with hepatitis C, hepatitis B and HIV. More than 3,000 people died as a result, and thousands more live with on-going health complications. For my final Christmas article for Readers Digest, I wrote on Stephen Christmas, a tireless campaigner for blood safety who lived with haemophilia and died in 1993, having contracted HIV through contaminated blood. 

I was a blood donor. However, I am now unable to donate blood or organs for the rest of my life since there is a possibility that my blood is ‘stained’, possibly with prion disease, after adopting embryos. The Blood Transfusion Service will not accept donations from women who have had various fertility treatments. 

And there’s another uncomfortable truth about blood donation – the NHS does not have enough blood, organs, tissues, platelets, plasma or stem cells to treat everyone who needs it. As a nurse, I remember caring for a man dying of liver cancer. Suffering from sudden, massive melaena (blood loss in black, tarry stools as a result of internal bleeding), he received emergency blood transfusion, with bag after bag of blood being infused, until the consultant called for the treatment to stop, because the bleed was too big – and blood supplies too scarce.  

Struggling to accept the stark reality of stained blood and dangerous shortages, I kept coming back to an old Sunday School song about blood, where absolute abundance and ultimate cleansing are instead promised. 

There is a fountain filled with blood 
   Drawn from Immanuel’s veins; 
And sinners, plunged beneath that flood, 
   Lose all their guilty stains. 

Gruesome and graphic in its imagery, but full of deeper meaning. And as a nurse, I’m accustomed to blood, sometimes lots of it. I’ve seen that man bleed out on the ward that night; I’ve attended a road accident, where a boy lost his leg – but not his life, because towels stemmed the massive flow of blood. I’ve raced a patient to the operating theatre after her aortic aneurysm burst within; I’ve stemmed arterial bleeding from the groin by applying prolonged pressure to the site punctured by a catheter during cardiac stenting. According to the World Health Organization, severe bleeding after childbirth is the leading cause of maternal mortality world-wide. Each year, about 14 million women experience postpartum haemorrhage resulting in about 70,000 maternal deaths globally.  

In the Bible, and in hymns of praise like this one, there is also no getting away from blood. “Like it or not, the Bible is a bloody book,” writes  Kyle Winkler. It runs through the book like a crimson thread. There’s a story of a woman bleeding for twelve years, until she touched the hem of Jesus’ garment and was healed.    

Elsewhere the Bible keeps returning to the idea of blood, shed in sacrifice, used to cleanse, save, and heal in a spiritual sense. In the Old Testament, animal blood was painted on doorposts at Passover as a sign of protection from judgment, and sprinkled ritually on the altar as a sacrifice for human sin, restoring relationship with God.  

On Good Friday, Jesus himself shed (and sweat) his blood, sacrificing his life on the cross to “wash our souls” once and for all. Millions of Christians across the world take a sip of communion wine each Sunday in commemoration of this act. It’s a beautiful gift, coming with a promise that the shed blood will “preserve thy body and soul unto everlasting life”, through the forgiveness of sins. It’s no wonder then that churches love to sing about this blood. “Would you be free from the burden of sin? There's pow'r in the blood, pow'r in the blood,” goes one hymn, while another simply says, “Your blood has washed away my sin, Jesus, thank you”.  

“God’s intention for blood isn’t gory—it’s beautiful! And I’m certainly not offended or scared by it,” writes Kyle. “Rather than question how little blood I can get by with, I’d rather stand under the cross to be covered in all that I can get!” Thank God for the fountain of forgiveness that flows from Good Friday. 

  

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The quantum of leadership: how to flourish in science

Resolving the big questions - a conversation with Andrew Briggs, quantum technology pioneer.
A professor stands next to experimental equipment.
Andrew Briggs beside quantum research equipment.

Professor Andrew Briggs has been at the forefront of quantum technology for decades, pioneering the use of AI and machine learning in quantum computing. Two technologies that will shape our world. 

Andrew has been a leader in a demanding and cutting-edge academic field. In this interview the Oxford-based academic shares his insights on how to lead scientific endeavours and flourish in life. 

Pawel Puczkarski: We meet on Northmoor Road, which, more than any other street, embodies the spirit of Oxford. 

Michał Łuczewski: I sense here the presence of all souls. 

Andew Briggs: Indeed! The Tolkien family first lived at number 22 before moving next door to number 20. Just opposite, in the garden shed of number 27, is where Sir Martin Wood built the first magnets for what was to become Oxford Instruments. Another neighbour was Sir Roger Bannister, the first man to run a mile in under four minutes. 

MŁ: High culture, big business, top sports. What about science? 

AB: Just across the street, Sir Rudolf Peierls spent his final years. He transformed our understanding of nearly every application of quantum theory, including materials science and nuclear energy. Nearby, Erwin Schrödinger was living at number 12 when he received the news that he had won the Nobel Prize; he later moved to number 24. It was also here that he conceived his famous Schrödinger’s cat thought experiment, which illustrated the fundamental insight of quantum physics—that quantum objects can exist in two states at once. The inspiration for the fictitious cat—both dead and alive—was quite alive. Schrödinger’s own cat was allegedly called Milton 

MŁ: What is your main driver in your manifold leadership roles? 

AB: The desire to contribute. And pure curiosity. I am absolutely fascinated by big questions. 

PP: What’s the biggest question that remains for you unanswered? 

AB:  I suppose it might be, “How can I be more loving?”  

MŁ: That’s a big question, how about big answers? 

AB: One thing I’ve learned over time is the ability to live with unresolved big questions while maintaining the curiosity to understand them better. Take quantum physics. Among scientists, there’s still no agreement on what exactly happens during the act of measuring a quantum system. And measurement is the most basic thing we do in experimental science. So, are we being intellectually irresponsible? Now take prayer. I don’t think there’s consensus among people who pray about what exactly happens when they do. I certainly don’t yet have a fully satisfactory answer. But I long for better understanding. Quantum technologies have too much potential to walk away from the mystery. Likewise, prayer is too important to abandon simply because I don’t fully comprehend it. 

MŁ: What is your own understanding of prayer, then? 

AB: Prayer is about developing a relationship with God, just as conversation is part of building relationships with people. Of course, relationships involve more than conversation. But if you never talk to someone, you’re probably missing out on something. There are many ways to engage God. It is our love for God and our experience of His love. Being kind to people is part of our love relationship with God. 

MŁ: How come such a hard-nosed scientist like you speaks about God so openly? 

PP: It brings to mind a story that stretches across more than a century. In 1874, physicist James Clerk Maxwell founded the Cavendish Laboratory in Cambridge. Carved on its entrance doors, he placed a passage from Psalm 111 in Latin. 

AB: As the first Cavendish Professor, Maxwell personally oversaw every aspect of the lab's creation. He was a man of deep Christian faith.  

PP: Fast forward to 1973—you, as a young research student, proposed to the departmental committee carving the same quote in English above the entrance to the new Cavendish Laboratory: 'The works of the Lord are great, sought out of all them that have pleasure therein'

AB: To the Head of Department’s surprise, the committee not only did not reject my audacious idea, but they enthusiastically supported it.  

MŁ: Another half-century passed… 

AB: And that quote still serves as a motto for the next generation—it suggests that those inside the laboratory are discovering how God makes the world work, and that this pursuit is deeply joyful. Science is a God-given resource for faith and for the work of the Church. If the Church is here to serve the world, it must engage with the world as it is. For example, during the pandemic, scientific knowledge was essential in caring for people at risk. Conversely, faith offers wisdom and a voice in public discourse. 

MŁ: What does leadership personally mean for you? 

AB: Leadership, whatever its tools or styles, is ultimately about choosing what values to lead with. You can exercise leadership in many areas. Each of us does it in our own way, within our sphere of influence, using our unique talents. I'm distinguishing between the tools of leadership—whether oratory, intellect, money, or whatever—and the deeper question of which direction you want to lead. The real question is: What kind of leadership will you exercise? 

MŁ: Is that where my responsibility lies? 

AB: Yes, and to implement that responsibility using whatever talents and opportunities we have. If you're a professor at Oxford, you have to excel in your field. But Oxford is full of opportunities beyond academia, and I feel both a responsibility and a pleasure in engaging with the wider implications of my work. 

PP: You were deeply involved in the rapid development of quantum technologies and quantum information processing, within the evolving landscape of Oxford itself. We're no longer solely a research university. There's been a growing emphasis on scientific entrepreneurship and spinning out companies. 

AB: You're absolutely right–it's been a significant cultural shift at the university. In 2021, in my lab we realized that many people wanted to use our techniques, but we had reached the limit of our capacity to help others from our own resources. As academics, we love collaborating and helping, but we hadn’t even begun to meet the commercial need. So, we worked with Said Business School to conduct market research, which confirmed there was a viable market. That’s when we spun out the company, QuantrolOx. 

MŁ: In his recent book From Strength to Strength, Arthur Brooks argues that our careers will end much sooner than we expect and asks how we should prepare for that. It seems you’ve figured that out. You seem to go from strength to strength

AB: Arthur is a valued friend. He spoke at the U.S. launch of the Human Flourishing book in Harvard. And was kind enough to host the U.S. launch of Penultimate Curiosity, the book I co-authored with the eminent artist, Roger Wagner.  

PP: I see his painting behind us. 

AB: Yes, Roger used to have his studio in this house. As you might have noticed, Arthur has been lately placing more and more emphasis on the role of faith for human happiness. 

MŁ: Through his works, Brooks has been undergoing a kind of spiritual conversion. He makes it clear now that the goal of life is happiness and human flourishing, which starts with meaningful work, friends, family and most importantly - faith. For him personally means renewing his Catholic faith daily, moment by moment

AB: And he’s been speaking about that in a way that is completely genuine and comes from the heart. 

MŁ: I think there’s a similar kind of scholarly conversion in your life, where Christian renewal meets the Greek ideal of kalokagathia—the unity of the transcendentals, also reflected in your books. Penultimate Curiosity explores beauty. It Keeps Me Seeking explores truth. Citizenship in a Networked Age explores justice. And beauty, truth, and justice find their unity in your last book: Human Flourishing. How do you see your life? 

AB: I want to keep contributing for as long as I have the energy and the wherewithal. But life is nonlinear and stochastic. 

MŁ: Professor, pray elaborate! 

AB: We make choices and we are subject to events each of which could have been otherwise, and the consequences are often out of all proportion to the causal factors. Randomness is fundamental in quantum theory where the uncertainty is very mathematically rigorously described. I sometimes wonder if today’s rising generation struggles with stress because they expect too much control over their own destiny. 

MŁ: No doubt. 

AB: And that’s where Providence comes in. What traditional spiritual English calls Providence—from the same root as to provide—is, I believe, essential to making sense of a world that is both stochastic and nonlinear. This confidence in Providence, in the idea that we can navigate a world that is chaotic and still thrive, is profoundly important. If you look at the Gospels, when Jesus called people to follow him, they took a risk. They could have been wrong, following someone who was a spoof, but they made a decision—and it turned out to be a good one. And I think it's true of deciding to follow Jesus Christ. Could I be wrong? I suppose so. I don't think I am, but I could be. I don’t have certainty, but I choose. 
 
MŁ: And how do you know it? 

AB: Think of flying. You prepare as much as you can, but unexpected situations always arise. Air traffic control sometimes tells you what to do, but mostly, they ask what your intention is. You can’t hesitate when you're flying a plane. You can't just say, well, I'm not going to decide. That's not an option. You try to make them safe choices. You try to make them wise choices. But you have to make choices. Same with life. Thinking is good. But thought must lead to action. Some say I live my life by my transferable flying skills! 

MŁ: And your final destination? 

AB: Heaven, I hope. I believe this life isn’t all there is. I believe in a future with Trinity—Father, Son, and Holy Spirit—free from pain and suffering. The risk is to focus too much on going to heaven. I think the emphasis should actually be on the other direction: heaven coming to us. 'Thy Kingdom come!' That gives dignity to this world. 

MŁ: This conversation was a foretaste of a heavenly banquet! 

AB: More like Spanish tapas—small plates, not a grand feast. 

PP: A series of little courses? 

AB: Exactly. And when you write this up, make it look like there was a plan. 

MŁ: In your nonlinear, stochastic life, we’ve already found a hidden pattern. A kind of Da Vinci Code of Andrew Briggs. 

AB: And the code is…? 

PP: Have you ever thought about combining your book titles into a life motto? Imagine it inscribed over your Northmoor Road house: Penultimate Curiosity… Keeps Me Seeking… Human Flourishing

AB: Perfect! I love it. That’s my code. 

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