714
DOCS.
676,
677 DECEMBER
1918
3.
I
approve
of the
Agreement
of
12
June
1918
regarding
the
proprietary
con-
sequences
of the
divorce and the
assignment
of
the
children to
the
custody
of
my
wife. I
also
agree
to
the
children’s
visiting rights
in such
a
manner
that
they
be
entrusted
to
me over
the
school
holidays during my sojourns
in
Switzerland.
r[ead out,] a[pproved,]
s[igned]
Albert
Einstein.
Jacobi. Hildebrandt.
Added
note:
“Urgent!”
677.
To Felix Klein
[Berlin,]
27
December
1918
Highly
esteemed
Colleague,
First
of
all, belatedly,
my
heartiest
congratulations
on
the beautiful
jubilee
you
celebrated
recently.[1]
When
we
look back
on
the
50
years
of successful work
you
have lived
through,
it
is
a
splendid spectacle
for
us all;
for
you yourself,
such
a
retrospective
view
must
be
an
experience
of
purest
satisfaction.
I
thank
you
furthermore
for
your elegant
and fine
proof
of
the
vector
character
of
Ep.[2]
One
more
comment
about the
field
equations.
Your
analyses completely
clarified
the
relations
d(Zuv +
Q
0
dxu
formally.
It
is
also
important,
though,
that it be
possible
to
bring
the
field
equations
into
the
form
Zuv+
tMt/
=
Div.
For these
relations
are
the
physical
expression
of
the
fact
that the total
energy
of
a
system
determines
the
outward directed
flow
of
force.
It
would be nice
to
know
whether this relation also
is independent of
the
special
choice of
the
Hamilton
function
for
the
gravitational
field.-
What
prompts
me
to write
today, though,
is
a
different matter.
Upon
receiv-
ing
the
new
paper by
Miss
Noether,[3]
I
again
feel
it
is
a
great
injustice
that she
be denied
the
venia
legendi.
I
would
very
much
support
our
taking
an
energetic
step
at
the
Ministry.[4]
If
you
do not consider
this
possible, however,
I
shall make
the
effort
on
my own.
Unfortunately,
I
have to
go away on a
trip
for
a
month.[5]
But
I
beg you
to leave
me a
short
message by
the
time
I
return. If
something
should have
to be done
beforehand, please
avail
yourself
of
my signature.
With
cordial
regards, yours truly,
A.
Einstein.