## Descartes's Secret Notebook: A True Tale of Mathematics, Mysticism, and the Quest to Understand the UniverseRené Descartes (1596—1650) is one of the towering and central figures in Western philosophy and mathematics. His apothegm “Cogito, ergo sum” marked the birth of the mind-body problem, while his creation of so-called Cartesian coordinates has made our intellectual conquest of physical space possible. But Descartes had a mysterious and mystical side, as well. Almost certainly a member of the occult brotherhood of the Rosicrucians, he kept a secret notebook, now lost, most of which was written in code. After Descartes’s death, Gottfried Leibniz, inventor of calculus and one of the greatest mathematicians of all time, moved to Paris in search of this notebook–and eventually found it in the possession of Claude Clerselier, a friend of Descartes’s. Liebniz called on Clerselier and was allowed to copy only a couple of pages–which, though written in code, he amazingly deciphered there on the spot. Liebniz’s hastily scribbled notes are all we have today of Descartes’s notebook. Why did Descartes keep a secret notebook, and what were its contents? The answers to these questions will lead the reader on an exciting, swashbuckling journey, and offer a fascinating look at one of the great figures of Western culture. From the Hardcover edition. |

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#### LibraryThing Review

User Review - JBD1 - LibraryThingOver-marketed for what it delivers, to be extremely kind. Aczel doesn't really get the seventeenth century, and misinterprets a fair bit of the historical background related to his subject. Probably not worth your time. Read full review

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User Review - jcbrunner - LibraryThingAczel has carved out a niche as a popularizer of mathematical concepts and their discoverers (pop science fast food). Descartes certainly deserves the attention but he deserves better than this book ... Read full review

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Descartes' Secret Notebook: A True Tale of Mathematics, Mysticism, and the ... Amir D. Aczel No preview available - 2006 |

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