Adventures in Geography

Hello there.  If you haven't read Episodes 1 and 2, please ​hop over and read those.  Episode 1 is here.

Ussher was the man of the moment, with his date making him famous.  But there were some heretics out there who made trouble for themselves and their rulers.  A Jesuit who was at the royal court in China made some ructions, but escaped prosecution by gapping it back east. Rene Descartes changed everyone's view of the world when he wrote his treatise on philosophy called "The World" but then had to beat a retreat to Holland for his troubles.  Read on, read on!


Bishop Ussher

Firmly entrenched and supported by the church, Ussher’s date seemed impregnable. However, some sceptics put forward their own versions. A French Calvinist and lawyer, La Peyrere in 1641 postulated that there had been people on Earth before Adam. This was heresy and of course was banned by Cardinal Richelieu, the prime minister of France. Essentially a pragmatic and fair man, he however realised what effect La Peyrereses manuscript might have in France. La Peyrere kep this freedom, but he did not desist with his theories, eventually in 1655 invoking the wrath of the Catholic Church. He was arrested, interred and forced to recant his heretical views – in short he got off lightly

Enter another player on this grand stage – a Jesuit missionary, Farther Martino Martini, who was carrying out missionary work in China.

On telling the Chinese that mankind had been destroyed by God in a great deluge, they greeted his pronouncements with ​disbelief. Their own history stretched well beyond the so-called date of the Flood, and they had records to prove it. A reversal of roles took place, with Martini realising that the ancient Chinese chronology posed a serious challenge to the authority of the bible. In 1654 he returned to Europe, where he published an account of Chinese history, receiving of course the usual disbelief and hostility which marked all other controversial ideas ​being proposed at the time. ​

Martino Martini

​R​ocks ​were believed to hold the secrets of the past​

However arrest and persecution was out of the question as Martini had returned to China to further his missionary work. Europe continued her dyed-in-the-wool approach, but slowly thinking was evolving, with crucial intellectual shift away from biblical textual authority towards an enquiry based on scientific principles. Throughout Europe the cry was the same: rocks, not books were believed to hold the secrets of the past. And indeed they did, and still do, and it was left to the natural philosophers to prove the age of the world.

​Earth had become old and wrinkled

One of the more interesting notions of the 17th Century was that the Earth had been created fully formed; flat, beautiful, unblemished, with no disease, famine, mountains or deserts to blemish her perfect face. A golden age had existed before the Flood, an age when all God’s blessings were poured out onto the world – in short a perfect God had created a perfect world. But now things were in decline – the Earth had become old and wrinkled, volcanoes and deserts were carbuncles and scars on the face of the Earth. An old prophecy that the world would last only 6000 years was being confirmed by nature. The thinking was that the Earth had run most of its days, and doomsday was not far off, perhaps only 350 years in the future (taking of course the date of 4004 BC as the day of creation).

​A weather eye was kept open for gathering storm clouds

​Rene Descartes

​However this idea of an ageing Earth brought the notion of a world in flux and a constant state of change to the fore, and it was Rene Descartes who lead the break with the literal interpretation of the bible. Reason was the r​aison d'etre. Paris, 1625, and our clever and sociable Descartes had become the leading light of Parisian intellectual life – a time when libertine free thinkers were making their mark. Caution was always necessary and a weather eye was kept open for gathering storm clouds in the direction or Rome. One Giulio Vanini, a ‘heretic’ doctor, had had his tongue cut out before being strangled and burned six years before for voicing some anti religious views. Inevitably the storm broke and Descartes moved to Holland, a country which has always had a tradition of tolerance and liberalism which endures to this day. He began his philosophical treatise, The World, which ​aimed be a complete revision of philosophy, eventually published in 1641.

​A few simple laws governed the universe

However it was a watered-down version of his original manuscript as it was a bad time for liberal thinkers. Galileo had recently been arrested and forced to recant his heretical views that the Earth went around the Sun. Descartes’ view was essentially that a few simple laws governed the universe, and these laws were what created the complex world around us. The world had the same relationship to God as a clock had to the clock maker – once it had been carefully constructed and set in motion, there was little more involvement from the creator. His ultimate achievement was to remove God from the day-to-day running of the world.  God may have created the world, but it was then governed by the laws of nature.​

Read Episode 4

About the author 

I am an Earth Scientist, with degrees from South African and British Universities.  When I am not consulting, I am blogging, making movies, building websites, sculpting dinosaurs and engaging with the world on all things geological and geographical.

Gerald Davie

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