The Sleepwalkers (36 page)

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Authors: Arthur Koestler

BOOK: The Sleepwalkers
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In
looking
back
at
the
part
of
the
road
travelled
so
far,
we
may
well
wonder
at
the
shortness
of
those
stretches
where
the
progress
of
science
was
guided
by
rational
thought.
There
are
tunnels
on
the
road,
whose
length
in
time
is
measured
in
miles,
alternating
with
stretches
in
full
sunlight
of
no
more
than
a
few
yards.
Up
to
the
sixth
century
B.C.,
the
tunnel
is
filled
with
mythological
figures;
then
for
three
centuries
there
is
a
shrill
light;
then
we
plunge
into
another
tunnel,
filled
with
different
dreams.

CHRONOLOGICAL
TABLE
TO
PART
ONE*

600
B.C.

O
rphic
Mystery cult

I
onian
Philosophers

500

P
ythagorean
Brotherhood (c. 530–450)

P
hilolaus
(5
th
cent.)

400

Herakleides
(c. 375–310)

Plato
(c. 428–348)

Eudoxus
and
Calippus
(4
th
cent.)

A
ristotle
(384–322)

300

Aristarchus
(c. 310–230)

A
pollonius
(250–220)

200

END
OF
GREEK
HELIOCENTRIC
COSMOLOGY

H
ipparchus
(c. 125)

0

A.D.
100

Ptolemy
(c. 150)


200

[GEOCENTRIC
COSMOLOGY BROUGHT TO PERFECTION]

Compilers

Pliny
the Elder (c. 23–79)

Plutarch
(c. 46–120)

Theon
of
Smyrna
(2
nd
cent.)

Macrobius
(c. 400)

C
halcidius
Martianus
Capella

(5
th
cent.)

Simplicius
(c. 535)

[SOURCES
FOR THE EARLY MIDDLE AGES]

*

Only
the
main
lines
of
development
of
cosmological
systems
are
represented.

PART
TWO
DARK
INTERLUDE

I THE
RECTANGULAR
UNIVERSE

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