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LIST OF TEXTS
xiii
40.
"On Friedrich Kottler's
Paper:
'On Einstein's
Equivalence Hypothesis
403
and
Gravitation',"
October
1916
"Uber Friedrich Kottlers
Abhandlung
"Uber
Einsteins
Aquivalenz-
hypothese
und die Gravitation""
Annalen der
Physik 51 (1916)
41.
"Hamilton's
Principle
and
the
General
Theory
of
Relativity," 409
26 October 1916
"Hamiltonsches
Prinzip
und allgemeine
Relativitätstheorie"
Königlich
Preußische
Akademie der
Wissenschaften
(Berlin).
Sitzungsberichte (1916)
Editorial Note: Einstein's
Popular Book
on
Relativity
417
42.
On
the
Special
and the General
Theory
of
Relativity
(A
Popular 420
Account),
December
1916
Über die
spezielle
und die
allgemeine
Relativitätstheorie
(Gemeinverständlich). Braunschweig: Vieweg,
1917
43.
"Cosmological
Considerations in the General
Theory
of
Relativity,"
540
8
February
1917
"Kosmologische
Betrachtungen
zur
allgemeinen
Relativitätstheorie"
Königlich Preußische
Akademie
der
Wissenschaften
(Berlin).
Sitzungsberichte
(1917)
44.
"Reply
to
the Plaintiff's Written Statement of
27
December
1916," 553
17
February
1917
"Antwort auf die Schrift der
Klägerin
vom
27.
Dezember
1916"
45.
"On the
Quantum
Theorem of Sommerfeld
and
Epstein,"
11 May
1917 555
"Zum
Quantensatz
von
Sommerfeld und
Epstein"
Deutsche
Physikalische Gesellschaft.
Verhandlungen 19
(1917)
46. Review of Hermann
von
Helmholtz,
Two
Lectures
on
Goethe,
568
2
November
1917
Zwei
Vorträge
über Goethe
Die
Naturwissenschaften 5 (1917)
47.
"A Derivation of Jacobi's
Theorem," 22
November
1917
571
"Eine
Ableitung
des Theorems
von
Jacobi"
Königlich
Preußische
Akademie der
Wissenschaften (Berlin).
Sitzungsberichte (1917)
48.
"Marian
von
Smoluchowski,"
14
December
1917
576
Die
Naturwissenschaften
5
(1917)
49.
"The
Nightmare,"
25
December
1917
580
"Der
Angst-Traum"
Berliner
Tageblatt,
25
December
1917

INTRODUCTION
TO
VOLUME
6
I
In the
period
covered
by
this
volume,
Einstein's life and
career
entered
a new
phase,
which
we
characterize
as
the Berlin
years.
His
appointment
as
salaried
member of the Prussian
Academy
of Sciences
placed
him
at
the focus of the
scientific
community
of his time-a
major change
from his
professorship at
the ETH in
more
peripheral
Zurich. This
new
appointment
also had
major
consequences
for his
personal
life:
during
the Berlin
years
Einstein became
more
and
more
of
a public
figure,
whose
opinion
on
nonscientific issues
was
sought
with
increasing frequency.
Indeed,
this first volume of
the
Berlin
years
already
contains
some
nonscientific
items, two
relating
to
the First World
War
(Docs. 8
and
20),
and
a
brief
statement
on
the
deleterious effect
of the
traditional
final
secondary
school
exam
in the
German school
system
(Ein-
stein 1917h
[Doc. 49]).[1]
The
early
months of the Berlin
years
also mark the
culmination of
an unhappy period
in
Einstein's
private
life: the
estrangement
from his
wife
Mileva,
which had started in
Zurich,
finally
led
to
a
separation.
After
only a
few months
spent
with
Einstein
in
Berlin,
Mileva and the
two
boys,
Hans Albert and
Eduard,
returned
to Zurich.[2]
During
the
war
years
Einstein's
relationship
with his
cousin
Elsa
Löwenthal,
whose
presence
there
had
helped
attract
him
to Berlin,
continued and
strengthened.
After his di-
vorce
from Mileva in
February
1919
he married Elsa
in
June of
the
same year.
The first Berlin
years
saw
the conclusion of
a
task that had
occupied
much
of Einstein's time and
energy
since his
return
from
Prague
to
Zurich in the
late
summer
of
1912:
the work
on a
theory
of
gravitation.
With the
publica-
tion in November
1915
of Einstein
1915f, 1915g,
and 1915i
(Docs.
21, 22,
and
25),
in
which
generally
covariant
field
equations
were
derived,
the
theory
was
completed.
Its successful
explanation
of
the
observed
anomaly
in
the
mo-
tion
of
the
perihelion
of
Mercury
in Einstein 1915h
(Doc. 24)
gave
the
theory
crucial
empirical support. Although
Einstein continued
to
work
out
further
[1]Einstein's
negative
views
on
examinations had been formed
at
least
by
the time that he
attended the ETH
as a
student
(see
Einstein
1979,
pp.
16
and
17).
[2]More
background
to
these and
other
occurrences
in Einstein's
private
life
is
provided
in
Vol.
8,
the
Correspondence
volume for the first Berlin
years.