# Quote — Arthur Koestler, The Sleepwalkers

> If there is a lesson in our story it is that the manipulation, according to strictly self-consistent rules, of a set of symbols representing one single aspect of the phenomena may produce correct, verifiable predictions, and yet completely ignore all other aspects whose ensemble constitutes reality...

- Author: [Arthur Koestler](https://www.leafyquotes.com/arthur-koestler.md)
- Book: [The Sleepwalkers](https://www.leafyquotes.com/arthur-koestler/the-sleepwalkers.md)
- Source: [Wikiquote](https://en.wikiquote.org/wiki/Arthur_Koestler#The_Sleepwalkers:_A_History_of_Man's_Changing_Vision_of_the_Universe_(1959)) ([CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/))
- Quote page: https://www.leafyquotes.com/arthur-koestler/the-sleepwalkers/if-there-is-a-lesson

## More from this book

> Today we know that on the sub-atomic level the fate of an electron or a whole atom is not determined by its past. But this discovery has not led to any basically new departure in the philosophy of nature, only to a state of bewildered embarrassment, a further retreat of physics into a language of even more abstract symbolism. Yet if causality has broken down and events are not rigidly governed by the pushes and pressures of the past, may they not be influenced in some manner by the "pull" of the future—which is a manner of saying that "purpose" may be a concrete physical factor in the evolution of the universe, both on the organic and unorganic levels. In the relativistic cosmos, gravitation is a result of the curvature and creases in space which continually tend to straighten themselves out—which, as Whittaker remarked, "is a statement so completely teleological that it certainly would have delighted the hearts of the schoolmen."

[Quote page](https://www.leafyquotes.com/arthur-koestler/the-sleepwalkers/today-we-know.md)

> The sixth pre-Christian century—the miraculous century of Buddha, Confucius and Lâo-Tse, of the Ionian philosophers and Pythagoras—was a turning point for the human species. A March breeze seemed to blow across the planet from China to Samos, stirring man into awareness, like the breath of Adam's nostrils. In the Ionian school of philosophy, rational thought was emerging from the mythological dream-world. ...which, within the next two thousand years, would transform the species more radically than the previous two hundred thousand had done.

[Quote page](https://www.leafyquotes.com/arthur-koestler/the-sleepwalkers/the-sixth-pre-christian.md)

> We find in the history of ideas mutations which do not seem to correspond to any obvious need, and at first sight appear as mere playful whimsies — such as Apollonius' work on conic sections, or the non-Euclidean geometries, whose practical value became apparent only later.

[Quote page](https://www.leafyquotes.com/arthur-koestler/the-sleepwalkers/we-find-in-the.md)