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12 min read

The Patriarch and the Caliph

Medieval Baghdad was an entangled world for the Christians and Muslims who lived and even partied together.

Benjamin is a DPhil student in the Faculty of History at the University of Oxford. He is researching the experience of Christian communities in medieval Central Asia.

A painting of a Sultan's court gathering round as a ambassador is presented.
Receiving the Ambassador.
Dionisio Baixeras Verdaguer, Public domain, via Wikimedia Commons.

As we seek to understand and grapple with the nature of Muslim-Christian relations in today’s world, we should not imagine that we have to reinvent the wheel. Throughout their shared history, many millions of Christians have lived within Muslim societies and alongside Muslim neighbours, and their experiences, absent from the history of western Europe, offer valuable perspectives for understanding and navigating our current global landscape.  

In 782 Patriarch Timothy was summoned for an audience with the Muslim Caliph al-Mahdī at his court in Baghdad. Timothy, just two years into his tenure as Patriarch, was one of the youngest to so far hold the title. As the head of the Church of the East, he oversaw communities scattered across an immense distance, from Syria to China, Sri Lanka to the Kazakh steppe; more believers, indeed, than the Pope in Rome. He himself came from a village near Erbil in northern Iraq, a region that was then, and for a long time after, majority Christian but which also lay near the heart of the Islamic Caliphate. Only twenty years before, the previous Caliph, al-Mahdī’s father, had founded Baghdad, intending it to be the great capital at the centre of the Islamic empire. It had since grown to an enormous size, soon eclipsing any city in Europe, its population over three times that of Constantinople or Rome. Among those who had newly settled in Baghdad was Timothy, who decided to similarly recentre the Patriarchate in the Caliphate’s capital. As such, Timothy was not an unusual sight at court. However, this day’s audience was something out of the usual.   

Baghdad was home to more than five monasteries at this time. They served both Christians and Muslims as cool retreats and beauty spots within the bustling city. 

Timothy entered the Caliph’s presence and made his courtesies and blessed him.  

“Since you are wise,” the Caliph asked, “why do you say that God ‘begat’ a son?”  

Over the next two days, al-Mahdī proceeded to ask him questions on the differences between Christianity and Islam: Do you believe in three Gods? Do you not believe that the Qur’an was given by God? Why do you not accept Muḥammad? 

Yet, for a Christian in the early Islamic world, to respond to such questions was not without trepidation.  

Generally, the Muslim state was not an active persecutor of Christians. Instead, Christians were expected to abide by certain social restrictions. These followed the precedent of a supposed agreement drawn up in the early seventh century between the second Caliph ‘Umar) and the majority Christian populations of the near east during the conquests of the region. Its historicity is doubted, but it came to have a great impact on the rights and responsibilities that Muslim authorities held to exist between themselves and their Christian subjects. 

Accordingly, Christians were restricted in their behaviour and dress. They had to distinguish themselves by their clothing, such as wearing a distinctive belt called a zunnār, and they were forbidden from taking Muslim names. They were not allowed to build or restore churches, nor to encourage Muslims to convert, let them in their churches, carry out services in their hearing, or serve them wine. In this way Muslims and Christians would be kept visibly distinct, Christians would be socially subordinated, and Muslims prevented from being led astray, with conversion kept strictly one-way. In return, Muslim authorities would guarantee freedom of belief and extend the protection of the state to Christians. Such was the law in theory.  

In the shade of the garden  

On Easter day the Christians of Baghdad would come from throughout the city to the monastery of Samālū to take communion. With them too came many of Baghdad’s Muslims to join in the festivities that followed. In the cool shade of the monastery’s beautiful gardens and palm groves they drank wine, danced with young Christians and listened to the sounds of the services, the chanting of monks and priests. This was not an unusual occurrence. Baghdad was home to more than seven monasteries at this time. They served both Christians and Muslims as cool retreats and beauty spots within the bustling city, while their frequent feasts and festivals always attracted many Muslims.  

A level of life otherwise invisible in the historical records, such revelries were a source of inspiration for many Muslim poets. Many of their longing verses on the joys of monastery gardens, the sound of Christian services, and the smells and tastes of wine, made their way into poetry collections, such as the tenth-century collection of monastery-themed poems and anecdotes compiled by the Iraqi Muslim al-Shābushtī. For these poets and the leisure class they represented, the transgressiveness of these themes was clearly part of the appeal, but in the background many ordinary Muslims too were freely attending Christian festivities and frequenting monasteries where they were overhearing services and rubbing shoulders with Christians.  

While rules existed to stop this mixing they were evidently not enforced. Indeed, the Muslim polymath al-Jāḥiẓ, in his Reply to the Christians written in the mid-ninth century, decried this regular flouting of the rules. The Christians rode highly bred horses and played polo, he complained. They gave themselves Muslim names, failed to wear their zunnārs or hid them beneath their clothes, and draped themselves in fashionable silks. Throughout most of the Muslim ruled near east and Mediterranean, Christians daily rubbed shoulders with their Muslim neighbours, generally without mishap. Christians worked with Muslims and many had Muslim relatives, as individuals and family branches slowly converted. Still these mixed environments could be hazardous for Christians to navigate.  

A party in Damascus 

At a party in Damascus, a few years prior to Timothy’s audience with the Caliph, a young Christian named Elias mixed alongside Muslim and Christian guests. He had been hired to wait at the party by the Muslim host, the owner of the saddle shop at which Elias worked, and found himself subjected to the taunts and mockery of some of the Muslim guests because of his distinctive dress. As the night wore on they warmed to him and he was invited to join the dancing, for which he laid aside his zunnār. Come morning, however, he was informed by some of the Muslim partygoers that they took this as a sign of his conversion. Terrified of being accused of apostacy from Islam if he was seen continuing to practice Christianity in public, he approached the manager of his workshop, a recent Muslim convert, who assured him that none of this would be reported. Sometime after this, Elias’ family confronted the manager over unpaid wages, and he threatened to report Elias for apostacy. Elias fled back to his home village. However, a few years later he returned, again requesting his unpaid wages. Enraged, the manager reported him to the authorities. He was charged with apostasy and executed.  

 So relates the account of his martyrdom, written not long after his execution, when he was already being commemorated as a martyr. We can’t be sure on the details. It is possible for instance that the narrative of being tricked at a party covers a more consensual conversion. Yet, parties could be hazardous as well as fun settings. Muslims and Christians freely mixed but there was still an underlying imbalance in social status. We see this in the poetic verses on monastery parties where young Christians often seem to have had little recourse in fending off the advances of older guests. Christians also had to be cautious in how they responded to possible mockery and questioning. Still, many of those executed for apostasy in this period had converted perfectly willingly before later recanting. Conversion to Islam was, in theory, very easy, requiring only the declaration of the shahāda, the Islamic expression of faith, acknowledging that there was no God but God and that Muḥammad was the messenger of God. Once witnessed, leaving Islam was legally impossible. However, again, this was not something that the state was active in searching out. Elias’ story rings true. Had he stayed in the village, he would probably have been fine, but it was a personal workplace conflict that provided the catalyst for his denouncement, at which point the state was compelled to act.  

The streets of Córdoba  

One of the other great cities of the early Islamic world was Córdoba, which lay at the heart of the Islamic emirate at the other end of the Mediterranean. Like Baghdad it dwarfed all the other cities of Europe and was home to many Christians and Muslims. Here, in 850, a country priest, while on an errand in the city, was approached by Muslims who asked him what Christians believed about Jesus and Muḥammad. The priest, named Perfectus, freely confessed Christ to be God but he was reluctant to offer an opinion on Muḥammad. However, further assured that there would be no repercussions, he did not hold back. He declared Muḥammad to be a false prophet, an adulterer deceived by demons. Enraged, his questioners nevertheless kept their promise and let him go. When, however, he was next in the city, word of his statements seemed to have spread. A crowd seized him, and he was taken before the city’s judge and imprisoned. Several months later he was beheaded.  

Perfectus’ death sparked a wave of deliberate blasphemy in the city. Over the next nine years, 33 Christians confronted the judge, stood in the city’s market forum, and even entered the grand mosque, denouncing Muḥammad and provoking the state to execute them. Their actions were immensely controversial among the local Christians. Actions of deliberate provocation intended to lead to martyrdom had been condemned by the early church, and many also saw them as imperilling the freedom they enjoyed from social restrictions. However, like al-Jāḥiẓ, it was a frustration with precisely this lack of distinction between Christians and Muslims that had at least partly inspired the martyrs, concerned that the distinction between Christianity and Islam would be lost too. Yet, there were also 11 individuals executed in these years who had not sought martyrdom. Executed for apostacy, some had converted to Islam and then changed their minds, or been supposedly tricked like Elias, others were the children of Muslim parents who had converted through the influence of a Christian relative. All came from mixed families, many the children of mixed marriages, and, unlike the blasphemers, all had been hunted down by the state after being denounced by relatives or neighbours. 

In the early Islamic world, blasphemy and apostacy were the main reasons Christians found themselves facing execution. However, in this too the state was not proactive but acted mainly in response to denouncers, who were often motivated by personal grievances.  

Back in Baghdad  

Standing before the Caliph, Timothy was fully aware of the perils. In answering al-Mahdī’s questions he was walking a tightrope between blasphemy and conversion. If he responded too stridently in his answers he could find himself, like Perfectus, charged with blasphemy. At the same time though, the Caliph’s questions on the oneness of God and the status of Muḥammad drove at the key elements of the Islamic confession of faith. Al-Mahdī had apparently tried to persuade Timothy’s predecessor to convert during a similar audience, while Timothy’s opponent in the election for patriarch supposedly later converted to Islam under the Caliph’s influence. If Timothy answered too deferentially, he perhaps risked claims of inadvertent conversion, like Elias.  

Asked why he believed God had begotten a son, he responded: 

“O God-loving King, who has uttered such a blasphemy?” 

"Do you not say that Christ is the Son of God?" 

"O King, Christ is the Son of God, but not a son in the flesh, he is the word of God.” 

He continued to answer the Caliph’s questions with much care and respect.  

Did the Qur’an come from God? 

“It is not my business to decide whether it is from God or not.” 

“What do you say about Muḥammad?” This was the area of greatest sensitivity.  

“Muḥammad is worthy of all praise by all reasonable people, O my Sovereign. He walked in the path of the prophets and trod in the track of the lovers of God. All the prophets taught the doctrine of one God, and since Muhammad taught the doctrine of the unity of God, he walked therefore in the path of the prophets. Because of this God honoured him and brought low before his feet two powerful kingdoms. Who will not praise, O our victorious King, the one whom God has praised? These and similar things I and all God-lovers utter about Muhammad, O my Sovereign.” 

“You should, therefore accept the words of the Prophet.”  

“Which words?” 

“That God is one and that there is no other one besides Him.”  

“I believe in one God, O my Sovereign, I have learned from the Torah, from the prophets and from the Gospel. I stand by it and shall die in it.” 

“We children of men are in this perishable world as in darkness,” declared Timothy. “The pearl of the true faith fell in the midst of all of us, and it is in the hand of one of us, while we all believe we possess it. The signs wrought in the name of Jesus Christ are the bright rays and shining lustre of the precious pearl of faith.” 

“We have hope in God that we are the possessors of this pearl,” declared the Caliph. 

“Amen, O King,” Timothy replied, “but may God grant us that we may share it with you, and rejoice in the shining lustre of the pearl!”  

“We pray,” he concluded, “that the King of Kings would preserve the throne of the Commander of the Faithful.” 

Whether this interaction happened, or happened the way Timothy reported it in his letter cannot be known. Certainly he had regular audiences with al-Mahdī and his successors. Earlier in the year he had appeared several times before the Caliph on the matter of restoring various churches along the western border. In Baghdad he was also known as a willing opponent for debate and a well-regarded expert on Aristotle, at a court in which people still regularly engaged in such interreligious debates. But either way, his reason for circulating this letter was clearly instructional, showing others how to avoid the hazards implicit in everyday encounters and conversations. It offered a vision of how to navigate safely between the twin dangers of apostacy and blasphemy, neither compromising Christian beliefs nor recklessly offending Muslim beliefs. While circulated primarily among the leading bishops and schools of the region, these were the individuals and institutions tasked with training priests, monks and teachers, who, like Perfectus, might find themselves the most frequently on the end of similar questions, while they further offered instruction to laity. Originally written in Syriac, the dialect of Aramaic primarily used by Christians, it was soon translated into Arabic and in this form remained popular in the region into the modern-era.  

Yet, still, Timothy felt keenly his own weakness and the imperfection of his answers, his inability to explain or persuade. 

“I feel repugnance,” wrote Timothy in his introduction to the letter, “on account of the futility of the outcome of the work. But love covers and hides all these weaknesses as the water covers and hides the rocks that are under it.” 

  

Further reading 

Full translation of Timothy’s Dialogue with the Caliph al-Mahdī, translated by Alphonse Mingana (1928): Link

Sahner, Christian C., Christian Martyrs under Islam: Religious Violence and the Making of the Muslim World (Princeton, NJ: Princeton University press, 2018). 

Interview
Belief
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Leading
S&U interviews
9 min read

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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