Philipp Blom - Nature's Mutiny (Picador, 2019) ****

From the end of the 16th to the mid-18th Century, the world was impacted by a Little Ice Age, for reasons still unknown. The consequences for people, nature and society were heavy: harvests did not yield any food, floods were frozen, hampering supplies, people were starving. We know this period from the many paintings of snow-covered landscapes and people ice-skating on frozen rivers. 

In this excellent historical review, German historian Philipp Blom analyses the deep impact of this moment of climate change on society, on its economy and as a consequence also on philosophy and science. 

Because of the lack of resources, the rich and powerful could no longer just grab land and levy taxes on the poor, because there was nothing to grab anymore. People in power had to think differently, on how to use the scarce resources in a much more efficient way than before: 

"For the first time in Western history, scholars and administrators began to think methodically about the structures and possibilities of  their  society and its economy without relying on biblical injunctions, their logical arguments by the doctors of the Church, or even the comparatively liberating philosophy of classical antiquity. Instead, they began to form their theories out of perceived current earthly needs such as money for the soldiers, for instance and on the immedi­ate material givens: geographical, demographic, and economic real­ities. They were leaving the Middle Ages behind and preparing the ground for what would eventually be called the Enlightenment." (p. 131)

That does not mean that wealth distribution was already on the agenda. Some thinkers were

"The wealthy merchant Mun clearly saw wealth as a danger to weak characters, and his therapy was equally unambiguous: 'As plenty and power doe make a nation vicious and improvident, so penury and want doe make a people wise and industrious." Wealth, it seemed, was good only in the hands of a small number of people who were born into it, or whose exceptional personal qualities enabled them to use it well." (p. 134)

Blom gives insights in the many influential thinkers of that time, most of which are known (Hobbes, Descartes, Giordano Bruno, ...), although some new and interesting figures come up, such as the Italian materialist Luciano Vanini, or the French priest and eccentric Pierre Gassendi (1592-1655) who strongly believed in observation through the senses instead of dogma and abstract thinking. 

"But if all knowledge comes from the senses, what about know­ing things that do not reveal themselves to our senses? Impossible, judged the priest, taking sides in this debate. Nothing can be known without sensory experience, not even God. Especially not God. Descartes' attempt to prove, through logic, the existence of a being beyond sensory perception, crumbled under the beam of Gassen­di's analysis. You can believe whatever you like, the priest implied, but you can only know something if you can or could experience it through your physical perception." (p. 168)

 Leading some pages later to the observation that "Nothing is certain, we have no access to a transcendental truth. We are alone" (p. 173).

The book is extremely well written, and as you might have understood, more about philosophy and the way learned people started looking at nature, than about the science of the Little Ice Age as a natural phenomenon. 

The book is relevant for today's political context as well. Democracy and science are always the first victims of autocracy, religious zealotry and power-hungry tycoons; 

"Liberal democracy is not, as many of Hegel's latter-day disciples would have us believe, a necessary consequence of historical prog­ress. Instead, it is a largely accidental, contingent, and vulnerable historical experiment with an open outcome, revealed by recent developments to be in present danger of being subverted, ignored, left to atrophy, or eliminated completely. Democracy was born out ideas first broadly debated during the Little Ice Age. It could eas­ily die or be hollowed out to a mere façade during our own era of climate change, as living conditions for ordinary people become harsher and the very rich take more power for themselves." (p. 283)

I am only afraid that this message will only be read and understood by people who are already convinced, while the ones who actually need to hear it, rarely read anything longer than a post on social media.