new (in French - but summary in English) :
A history of art and architecture in 12 periods,
revealing over the millennia the evolution
of the perceived relationship between matter and spirit
an Essay on art
Where it will be shown that this is not the representation of a hand
site in French: science, visual arts, music, mathematics
English version of Quatuor on line since August 1999
All the texts of the site are protected by the French
law of the 11th Mars 1957 which forbids copies and reproductions designed
to collective use. Whatever the process, any complete or partial reproduction
without the consent of the author is illicit and is a pirating punished
according to the article 425 and followings of the penal code.
The drawings and diagrams without any reference are by
the author. The pictures which are not from the author (drawings, diagrams,
photographs) have a clear mention of their author and of their source,
what respects the article 41 of the law of the 11th Mars 1957 about the
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presentation, but as short quotations justified by the critical, polemical,
educational and scientific nature of the text to which they are here incorporated.