First UK edition (published by Hutchinson)
|Subject||Astronomy and cosmology|
|Media type||Print (Hardcover)|
The Sleepwalkers: A History of Man's Changing Vision of the Universe is a 1959 book by Arthur Koestler. It traces the history of Western cosmology from ancient Mesopotamia to Isaac Newton. He suggests that discoveries in science arise through a process akin to sleepwalking. Not that they arise by chance, but rather that scientists are neither fully aware of what guides their research, nor are they fully aware of the implications of what they discover.
A central theme of the book is the changing relationship between faith and reason. Koestler explores how these seemingly contradictory threads existed harmoniously in many of the greatest intellectuals of the West. He illustrates that while the two are estranged today, in the past the most ground-breaking thinkers were often very spiritual.
Another recurrent theme of this book is the breaking of paradigms in order to create new ones. People – scientists included – hold on to cherished old beliefs with such love and attachment that they refuse to see the wrong in their ideas and the truth in the ideas that are to replace them.
"The conclusion he puts forward at the end of the book is that modern science is trying too hard to be rational. Scientists have been at their best when they allowed themselves to behave as "sleepwalkers," instead of trying too earnestly to ratiocinate."
- Arthur Koestler, The Sleepwalkers: A History of Man's Changing Vision of the Universe (1959), Hutchinson
- First published in the United States by MacMillan in 1959
- Published by Penguin Books in 1964
- Reissued by Pelican Books in 1968
- Reprinted by Peregrine Books in 1986; ISBN 0-14-055212-X
- Reprinted by Arkana in 1989; ISBN 0-14-019246-8
- Questia.com Online readable version (limited preview) 
- Chapters on Kepler excerpted as The Watershed published by Doubleday Anchor in 1960, as part of the Science Study Series.
- Frankel, Charles (24 May 1959). "The Road to Great Discovery Is Itself a Thing of Wonder". The New York Times. Retrieved 18 June 2014.
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