The Notebooks of Leonardo Da Vinci

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Page 915 of 1565.
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Cicero says in [his book] De Divinatione that Astrology has been
practised five hundred seventy thousand years before the Trojan war.

\ 57000.

[Footnote: The statement that CICERO, _De Divin._ ascribes the
discovery of astrology to a period 57000 years before the Trojan war
I believe to be quite erroneous. According to ERNESTI, _Clavis
Ciceroniana,_ CH. G. SCHULZ (_Lexic. Cicer._) and the edition of _De
Divin._ by GIESE the word Astrologia occurs only twice in CICERO:
_De Divin. II_, 42. _Ad Chaldaeorum monstra veniamus, de quibus
Eudoxus, Platonis auditor, in astrologia judicio doctissimorum
hominum facile princeps, sic opinatur (id quod scriptum reliquit):
Chaldaeis in praedictione et in notatione cujusque vitae ex natali
die minime esse credendum._" He then quotes the condemnatory verdict
of other philosophers as to the teaching of the Chaldaeans but says
nothing as to the antiquity and origin of astronomy. CICERO further
notes _De oratore_ I, 16 that Aratus was "_ignarus astrologiae_" but
that is all. So far as I know the word occurs nowhere else in
CICERO; and the word _Astronomia_ he does not seem to have used at
all. (H. MULLER-STRUBING.)]

Of time and its divisions (916-918).

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