Power And Curiosity: How The Abbasid Caliph Al-Mamun Pushed The Boundaries Of Scientific Knowledge 

Born in 786, al-Mamun was the son of the legendary Caliph Harun al-Rashid, whose adventures feature in lurid detail in One Thousand and One Nights. Harun appointed Jafar, a member of the cultured Persian Barmakid family, as Mamun’s tutor, who instilled a profound love of learning in his young pupil that continued throughout his life.

Well versed in all aspects of Greek philosophy and learning, Mamun even claimed that Aristotle had visited him in a dream, and he certainly adopted the great philosopher’s fascination with the natural world and how it works.

A gold Abbasid dinar, struck during the reign of al-Mamun

When Mamun became Caliph (after a bloody civil war with his brother al-Amin, Harun’s chosen heir) he put his enormous power and wealth in the service of scientific discovery. His personal interest and curiosity lay at the heart of this endeavour. When on campaign in Egypt he commissioned scholars to try to decipher hieroglyphs (something that was not finally achieved until after the discovery of the Rosetta Stone in 1799), he forced entry into the Great Pyramid of Khufu and was disappointed to discover that it had already been plundered – apparently all that was left was a sarcophagus of bones and a jar of gold.

Back in his capital city Baghdad, he and erudite members of the elite paid translators in bags of silver to carry out vital work transmitting ideas from ancient Greece, India, Persia and Syria into the Arabic tradition. Obtaining copies of these books was a vital component of the huge flowering of learning in Baghdad during this period, Mamun himself wrote to the Emperor in Constantinople asking him to send ancient texts so he could have them translated into Arabic.

A 16th century image of astronomers using a wide array of instruments in an observatory.

He also paid for original scientific research, setting up the first observatory in the Islamic world so that his astronomers could record accurate observations of the celestial bodies, later building another one in Damascus so that data from the two could be compared. Mamun’s palaces thronged with scholars engaged in lively debates, he encouraged them to challenge one another and the ancient texts they studied. He was demanding and arrogant – no question was too big or too difficult, he wanted to know everything, a desire that culminated in a project to measure the circumference of the globe. Ancient astronomers had already made these calculations, using the stars to work out how much one degree of the circumference measured and then multiplying it by 360, the problem was that there was no record of the size of their units of measurement. Mamun’s astronomers set off in the middle of the night across the flat plain of Sinjar, one group walking due north, the other due south, until they had measured one degree of the earth, before walking back towards one another carefully counting the distance. The resulting average, when multiplied by 360, gave them a total of 24,500 miles – a mere 400 miles off the accepted distance measured by modern science. This was an exceptional feat of scientific brilliance, but, typically, Mamun was not satisfied – he sent them all off to the Syrian desert so that they could repeat the experiment and check their answer. Under Mamun’s influence, scientific discovery blossomed in the Islamic Empire; his vision, curiosity and charisma helped fuel one of the greatest intellectual epochs of all time. 

In The Map of Knowledge, I follow the books translated and written in Mamun’s Baghdad as they travel across the Mediterranean and later pass into Latin Europe, where, in fifteenth century Venice, they are printed for the first time and their legacy is assured. 


Violet Moller is a historian and writer who lives in Oxford. The Map of Knowledge received a prestigious RSL Jerwood Award in 2016.

She will be speaking at Chalke Valley History Festival on Thursday 27th June 2019 about The Map Of Knowledge: How Classical Ideas Were Lost And Found. Tickets are available here.

The History of Philosophy

Extract from ‘The History of Philosophy’ by A.C. Grayling published on 20th June 2019.

It would seem that there is a recipe for being a great civilisation-dominating figure such as the Buddha, Confucius, Socrates, Jesus and Mohammed. It is this: Write nothing. Have devoted disciples. Be lucky. Note that this recipe does not include: Be original. Be profound. None of these figures were either of these things, though in the Be Lucky department they had followers who were both, and who made from the remembered fragments of their sayings, and the legends that embroidered memory of their persons, whole systems of thought and practice which they themselves might probably not have recognised or even perhaps approved. 

If these seem to be disparaging things to say, as a kind of lese majeste against the greatest and most iconic of names, note this. Each of these figures was, in his own time, one among many who were doing what they were doing: teaching or preaching, gathering followers, variously borrowing from and disagreeing with others and with earlier teachings. In the case of some it was decades, in the case of others centuries, before the teachings attributed to them were written down. In each case the followers of their followers soon began to disagree and split from each other, the schisms and quarrels forming different versions of the legacies thus surviving. 

Take Siddartha Gautama – he who came to be known as the Buddha – as an example. Legend makes him the son of a king who led a life so sheltered and opulent that when he first encountered a sick man, an old man and a corpse in the world outside the palace walls he was shocked, and therefore abandoned his station and family and set off as a mendicant wanderer in search of release from the sufferings of life. He tried deep meditation at the feet of the yogis, he tried severe self-mortification after the fashion of the ascetics, seeking by these means to secure release from the endless cycles of pain that constitutes existence. Neither worked. But one day, seated in thought under a Bodhi tree, he found enlightenment: he became Buddha, ‘the enlightened,’ and was released; and spent the rest of his life teaching disciples.

This fabulised and abbreviated account makes Gautama seem as if he were unique, as if he arose out of nothing with a great and transforming revelation to offer the world. But what of the yogis and ascetics with whom he first studied? In fact he arose out of a period in the history of India that was tumultuous in the tens of thousands of seekers and mendicants, of yogis and ascetics, of teachers and preachers, who congregated in huge crowds in great public debating halls and in parks in the cities of the Ganges, where they argued among themselves, lectured the public, and taught their followers. It was common currency that acts of charity would help towards a more fortunate reincarnation in a next life, and therefore these swarms of mendicants were able to rely on being fed and clothed by the communities through which they passed. Nothing was more helpful to fostering the abundance of philosophy and religion in the India of that time than the coupled ideas of reincarnation and karma.

The teachings of the Buddha began to be written down three to four centuries after his death. The two oldest sources of what he is believed to have taught are the Suttapitaka (the Basket of Discourses) and the Vinayapitaka (the Basket of the Disciplinary Code). They were gathered from memorised oral transmission of the teachings, an approximate canon of which had been formed by about a century after his death. The oral nature of this first record introduced formulaic and repetitive forms required for memorisation, and variations in the eventual texts made from them are in part attributable to the vagaries of memory. But there were certainly also misunderstandings, interpolations and reinterpretations of the material passed down too, adding to the variability of the written versions.

Moreover, whatever language the Buddha spoke in his native land among the Sakya people, who lived in what is now the border area between India and Nepal on the northern slopes of the Ganges basin, it was not Pali, Sanskrit or one of the Pakritic dialects, and the transmission of Buddhist teachings through these languages, and later through other south Asian languages and Tibetan, Chinese and Japanese, introduced many differing additions and changes to create what Buddhism is now.

Nevertheless there is a recognisable core to Buddhist doctrine, centering on the Four Noble Truths and the Eightfold Path. A striking fact about Buddhism, as with the rival outlook that arose at the same time in history, namely Jainism, is that it is not a religion but a philosophy. It involves no deity or deities, and relies on no messages from transcendent sources about the purpose of life and how to live it. Later versions of Buddhism in Tibet, China and Japan gathered a great penumbra of superstitions and beliefs in gods and inhuman beings – a typical development for the human imagination – but this constitutes a corrupted version of the original, as the austere scholars of the Theravada school of Sri Lanka will readily tell one, as they look with disdain at the excesses of the Mahayana schools and their encrustations of the ‘true doctrine’ with what these scholars think is nonsense.

Matters are no different as regards Confucius. He too was one of many ‘literati’ who sought to advise princes and teach a way of life; he had the good fortune to inspire a follower who lived a century after his time, Mencius, whose admiration prompted even later scholars to collect sayings attributed to Confucius and write them down. About two and a half centuries after Confucius’ death the first emperor of unified China, Qin Shi Huangdi (221-206 BCE) made a bonfire of the books of all previous philosophers – and, as it happened, any available living authors of them too – in order to efface the past and to establish the Legalist philosophy of his own day, which supported his rule. Fortunately he was unable to destroy all copies of previous classics such as the Book of Songs, the Spring and Autumn Annals, the Analects of Confucius, the Yijing (in an earlier Anglicisation known as ‘I Ching’), and Mencius’s book, the Mengzi. When the next dynasty came into power, known as the ‘Former Han,’ Confucius’s reputation blossomed; numerous of the ancient classics were attributed to his authorship or editorship, and preferment in the bureaucracy of the empire turned on success in examinations on the classics attributed to him. The Confucian character of China was shaped by the many and long periods when the teachings attributed to Confucius were the subject of these imperial examinations; they only ceased to be so in the first decade of the twentieth century.

The pattern of post-mortem collections of saying and teachings, the earliest written down decades after the event, and a canon being established only centuries after the event, is repeated in the case of Jesus and Mohammed. The stand-out figure is Socrates, personally known to Plato, Xenophon and others who wrote about him – but even here too, with the exception of some lampoons by Aristophanes, nothing was written about him or recorded of him until after his death. Subsequent philosophers developed different aspects of Socrates’ legacy – Aristotle the trope of the considered life, the Cynics his disdain for convention, the Stoics his fortitude and adherence to principle – but in the case of the Buddha, Jesus and Mohammed the divergences and schisms among their followers in the centuries after their deaths descended into conflict and violence. This too, alas, is a typical feature of things human.

Socrates is however like all the others in having been one among a large number of people – in his case the Sophists – who were doing much the same thing as he was: teaching, influencing, attracting pupils. Jesus was likewise one of a large number of enthusiasts and preachers, and his form of execution – reserved by the Roman authorities for political insurrectionaries – suggests that he was not viewed as being much different from the many others who were disturbing the peace at the time. Gautama competed for the attention of his contemporaries with the Jains, with other atheist philosophers, and with the theistic devotees of the India of his day. Why did Confucius rather than Mozi come to have followers long after his own time who elaborated teachings in his name, thus making him the venerated sage of China? Why did St Paul choose to make a religion out of the deceased Jesus rather than some other zealous preacher of the day? You might reply: the intrinsic merits of the teaching. Perhaps so. But undoubtedly there was a large measure of luck in it. And it makes one ask, prompted by Thomas Grey’s Elegy in a Country Churchyard, how many ‘village Hampdens and mute inglorious MIltons’ in their thousands thought and taught, but have been long forgotten? Refocus the question and ask, Why is it that romantic novels sell in far greater numbers than literary ones? Were there teachers and thinkers of profound insight whose teachings were too difficult to understand or to follow, leaving the legacy of the more popular ones to flourish in history? A survey of the history of philosophy suggests an answer: in it are to be seen the thinkers who may well have more to offer the thoughtful than the popularised teachings associated with those ‘big names.’

One thing we certainly learn from these considerations is that ‘Buddha,’ ‘Confucius’ and the rest are the names of images or icons rather than of people – or better, perhaps, the ideas of notional people to whom can be attributed for convenience the inspiration for a philosophy or a religion. 

Picking out a few individuals for elevation to iconic status in this way is a kind of shorthand for the entire period in which they and increasingly many others were raising questions about values, society, ideas of the good, and enquiry into fundamental questions about the word and humankind. No doubt others had done the same in the millennia before them, but at this period – between the eighth and third centuries BCE especially – there was a marked efflorescence of debate, both in numbers of people involved and written records of what emerged from their discussions. For this reason the period has been labelled ‘the Axial Age’ (axiology is the study of values, from Greek axia ‘worth,’ ‘value’) – a name coined by Karl Jaspers on the basis of views advanced by scholars in the nineteenth century who were struck by the emergence of philosophy in India and China contemporaneously with its appearance in the Greek world. Jaspers included Zoroastrianism in Persia and Judaism in the Middle East among the movements constituting the age, and might have added many more which have since vanished into historical curiosities, such as the mystery cults, Hermeticism, and then-contemporary versions of the mythopoeic religions of Egypt and Mesopotamia. It would seem that philosophy – what we recognise specifically as philosophy – stood out against the increasingly busy background of speculation in all these forms, and it is a striking fact that the great iconic figures at the heart of the period – Buddha, Confucius, Socrates – are all philosophers, not prophets or religious leaders, still less gods.


A. C. Grayling CBE MA DPhil (Oxon) FRSA FRSL is the Master of the New College of the Humanities, London, and its Professor of Philosophy. He is also a Supernumerary Fellow of St Anne’s College, Oxford. He is the author of over thirty books of philosophy, biography, history of ideas, and essays.

He will be speaking at Chalke Valley History Festival on Thursday 27th June about The History of Philosophy. Tickets are available here.

🎧 The Red Devils Over Normandy

A recording from Chalke Valley History Festival 2018, from a morning of exclusive talks and demonstrations looking at the story of the British Airborne Forces in #WW2.

Here is former Commander of 3 Para in Afghanistan, Stuart Total in conversation with Fred Glover who was in 9th Para on 6th June 1944, tasked with jumping ahead of the main seaborne allied landing, Operation Neptune, to secure the left flank of the invasion and facilitate the seaborne landing.

THE LAST CAVALIER: PRINCE RUPERT OF THE RHINE

When I remembered that 2019 marked the 400th anniversary of the birth of Prince Rupert of the Rhine, I immediately thought that this was something I wanted to mark:  I spoke to Jane Pleydell-Bouverie, Festival Director of Chalke Valley, and we agreed that I should put together a talk on him for the CVHF audience that I know – from recent talks I’ve given there, on Charles I and then (last year) on Charles II – loves the English Civil War.

When I started researching Rupert for his biography, 13 years ago, I really only knew about his dynamic and controversial hand in that conflict. Then I got to grips with an astonishingly broad life – one that involved his piracy, romantic forays, many fascinating siblings, scientific and artistic discoveries, punchy quarrels with Samuel Pepys, as well as his pivotal role in the opening up of Canada.

Rupert starts off as a baby, being tossed into the last royal carriage fleeing his parents’ vanquished capital, and ends up as one of the most important people in England – a battered veteran at sea in the louche world of Restoration England.

I’m returning to Chalke Valley to share an astonishing life with an audience that loves History – and I can’t wait!


Charles Spencer obtained his degree in Modern History at Magdalen College, Oxford. He was a reporter on NBC’s Today Show from 1986 until 1995, and is the author of several books, including Sunday Times bestseller Blenheim: Battle for Europe (shortlisted for History Book of the Year at the 2005 National Book Awards), Prince Rupert: The Last Cavalier, Killers of the King and To Catch a King: Charles II’s Great Escape.

He will be speaking about Prince Rupert of the Rhine on Thursday 27th June – tickets are available here.

🎧 LANSDOWNE: THE LAST GREAT WHIG

Recorded at Chalke Valley History Festival 2018.
Despite a distinguished 50-year career as a statesman, ultimately Lord Lansdowne was branded a traitor for seeking peace with Germany in 1917. His great-great grandson Simon Kerry presents this great man in the context of his own time.

🎧 THE CORONATION: THE QUEEN’S MAIDS OF HONOUR

Recording from Chalke Valley History Festival 2018.
Roaring crowds, rehearsals and dress fittings, fainting fits, furtive sips of brandy and Scottish toffees from the Privy Purse, these are amongst the memories of the Maids of Honour chosen to accompany the Queen on her Coronation Day. Lady Anne Glenconner (then Coke, middle left) and Lady Rosemary Muir (then Spencer-Churchill, far right), two of the six women who filled this important role, gives a scintillating insight into their experience of this historic occasion. In conversation with Hugo Vickers, they also talk about growing up at Holkham Hall and Blenheim Palace.

🎧 TO CATCH A KING: CHARLES II’S GREAT ESCAPE

Audio from Chalke Valley History Festival 2018.
In 1651 the Royalist forces were crushed by the might of Cromwell’s armies at the Battle of Worcester. For the next six weeks the future Charles II was hunted by his father’s killers, who now wanted him dead too. Using Samuel Pepys’ original account, Charles Spencer brings to life the thrilling story of one of the greatest escapes in British history.


Charles Spencer obtained his degree in Modern History at Magdalen College, Oxford. He was a reporter on NBC’s Today Show from 1986 until 1995, and is the author of several books, including Sunday Times bestseller Blenheim: Battle for Europe (shortlisted for History Book of the Year at the 2005 National Book Awards), Prince Rupert: The Last Cavalier, Killers of the King and To Catch a King: Charles II’s Great Escape.

He will be speaking about Prince Rupert of the Rhine on Thursday 27th June – tickets are available here.

🎧 DUNKIRK

Recording from Chalke Valley History Festival 2017.
James Holland looks at one of the most iconic moments in Britain’s history. He examines the background to the German attack on the West in May 1940, challenging many of our deeply held perceptions, and explaining why the British evacuation of Dunkirk was, and remains, such a significant event.

Gold, Frank-intentions and Murder

By the summer of 1940 Britain stood alone on the edge of Europe with nothing to protect her apart from the Channel.

This is an oft stated fact that has become entirely accepted by a large majority of the British population today. But is it true? Strictly speaking, yes. Geographically we stand on the edge of the European continent and always have done. There is nothing new in that claim. But the implication here when set in the context of the early summer of 1940 is that of plucky little Britain, with its population of 38 million, standing shoulder to shoulder to face the threat of a German invasion entirely alone and with no support from anyone. That is the bit that is not true and it does history a great disservice to ignore the massive contribution made by our friends and allies both that summer and in the subsequent springs, summers, autumns and winters that followed.

By the time the Battle of Britain took place, London was host to seven foreign governments-in-exile and the hot-headed French General, Charles de Gaulle, had arrived as well. None of them came empty handed. 

The Norwegian government leant the British more than 1,300 vessels from their fleet, the fourth largest and most modern merchant fleet in the world, which sailed with the Atlantic convoys for the whole war. In 1941 a British official declared that the Norwegian merchant fleet was worth ‘more than an army of a million men’. That was an enormously valuable contribution and one that was not without risk. Many Norwegian sailors would lose their lives in the heaving seas of the submarine-infested waters of the North Atlantic. In addition, King Haakon of Norway brought 1400 soldiers, 1,000 sailors and a small number of pilots that grew rapidly over the next few months. 

The Belgians donated their substantial gold reserves and over the course of the war shipped 1,375 tons of uranium from their stocks to the USA to fuel the Manhattan project. 

The Dutch government and their magnificent Queen Wilhelmina, who was described by Churchill as the only real man among the governments-in-exile in London brought six hundred ships from its mercantile fleet and rich resources from the Dutch East Indies. 

Jozef Gabcik, one of the two assassins of Reinhard Heydrich

Jan Kubis, the assassin who threw the grenade that killed Heydrich

The Czechs’ contribution was brilliant intelligence from inside Nazi Germany. Their main agent, A54 as he was known, was a high-ranking Abwehr officer who divulged highly valuable secrets until his eventual capture in 1941. He told the Czechs about the build-up of Goering’s Luftwaffe, he gave them the code for German wirelesses in 1938. It was a sinister code: Heil 15 März and a week before Prague was invaded (on 15 March 1939) he told them that the Germans had been instructed to round up all intelligence officers and treat them with great harshness. His warnings helped the intelligence services to evacuate to London the night before the invasion. In 1942 two agents, one Czech, one Slovak, carried out the most audacious assassination of the highest-ranking Nazi to be murdered: Acting Reichsprotektor Reinhard Heydrich. Jozef Gabčik and Jan Kubiš were trained in Britain and flown to Bohemia by the RAF to carry out the murder. Our past is inextricably linked to the former Czechoslovakia.

Charles de Gaulle’s contribution would take longer to materialise but his presence in London cannot be underestimated. Churchill, passionately supportive of the French, gave de Gaulle every encouragement as he gradually built up the Free French army and encouraged the development of the Resistance. Many of their agents were trained in Britain and used safe houses all over the country, including one in Sussex which features in Our Uninvited Guests, to stay while waiting for flights into occupied France.

End House, used during the war as a secret training base for Polish agents.

The Poles brought fighter pilots to the Battle of Britain. They were among a total of 8,000 airmen and 20,000 soldiers as well as hundreds of sailors manning three destroyers, two submarines and a number of smaller vessels who arrived here after the Fall of France. By the end of the war the Polish was the fourth largest Allied Force after Russia, the USA and the British Empire. Critically they also sent an early decoded version of the Enigma machine for the British security services. It was the Poles in 1932 who first worked out how to use the German Enigma machines and they had been reading German messages for the greater part of seven years by the time the war broke out. I’m not saying the coders at Bletchley Park could not have done their work without Polish help but it might not have happened so quickly. We owe the Poles more than we ever imagine. That is why I have dedicated my book to them. They might have been Uninvited Guests but they were brilliant guests to have on our side.

Auxiliary Units trained at Coleshill House near Swindon from the summer of 1940 until they were stood down in late 1944

Closer to home we had the Auxiliary Units, young men and women recruited in the summer of 1940 to act as a sabotage force to work behind the lines in the event of an invasion. They were told their work was so secret that they could not tell anyone about it outside the tiny groups of six or so who would man an observation post, underground, and plan their attacks on bridges, railway lines, petrol stores and so on. The life expectancy of an Auxilier had the Germans invaded was estimated to be no more than fourteen days. Their training centre was based at Coleshill House, home of the Pleydell-Bouverie family, just outside the village of Highworth in Wiltshire, close to the railway hub of Swindon, meaning that trainees from all over the country could reach Coleshill with relative ease. The man who developed the training programme to turn vicars, poachers, farmers and schoolteachers into saboteurs and silent killers was Brigadier Sir Colin McVean Gubbins, the man who would later be in charge of Special Operations Executive.

When you next hear somebody misusing history, please suggest they might like to read Our Uninvited Guests and remind themselves of the real behind the scenes story of the summer of 1940.

 

 

 

 


Julie Summers is a bestselling author and historian. Her books include: Fearless on Everest: The Quest for Sandy Irvine; The Colonel of Tamarkan, a biography of her grandfather, the man who built the ‘real’ bridge on the River Kwai; Stranger in the House, a social history of servicemen reuniting with their families after the Second World War, and When the Children Came Home, which tells the story of returning evacuees. Her book Jambusters was the inspiration for ITV’s hit drama series Home Fires, which ran for two seasons in 2015–16.

Julie will be speaking at Chalke Valley History Festival on Friday 28th June about Our Uninvited Guests: The Secret Lives of Britain’s Country Houses. Tickets are available here.

🎧 THE GREEDY QUEEN: EATING WITH VICTORIA

From a recording at Chalke Valley History Festival 2017.
Come and sit down at the royal table and open the kitchen door to hear about what Victoria ate, and how she changed English food forever. Based on intriguing original research, historian Annie Gray shows the Queen’s absolute reliance on food as well as delving below stairs for a proper look at the cooks who played such an important role.