DOCS.
539,
540 MAY 1918 559
no
particular
interest
here in
hearing
lectures in
the
German
language.
You
see,
though,
that
I
have succeeded in
spinning a
little
“web of
sympathizers,”
as
I
had
planned.
Of most
importance to
me
(if
I may say
so
to
you, considering
the
kind
interest
you
have
always
shown
me),
is
an
infinitely
rich
friendship
with
the
writer
Sophus
Michaëlis whose books had
always
been
the
most
precious
to
me
of what
Europe’s
literature
has to
offer![3]
An
inspired,
ingenious
poet
who
writes
books
of classical
beauty, reaching beyond
the
current
trends
and
national
boundaries
and
yet
full
of
musically rhythmic life!
Mrs. Elsa
must
read Giovanna to
you
sometime,
which
little
Lena
Katz
owns.[4]
Now,
farewell,
esteemed Professor.
Unfortunately,
one
cannot
expect
the
censor
to read
lengthier
letters
more
frequently!
But
a sign
of
life
is sufficient, you know.
These postcards
are
naturally
intended
for Mrs. Elsa
as well,
to whom
I
extend
my very
cordial
regards.
Please
send
me a
short note sometime.
With
amiable
regards, your gratefully
devoted
Charlotte
Weigert.
540. From
Felix Klein
Göttingen, 18
May
1918
Esteemed
Colleague,
I
have
been
hearing
from various
quarters
about
a
note
on
gravitation theory
that
you presented
on
7
March
to
the Berlin
Academy;[1]
I
would be
very
grateful
if
you
could
procure me
an
offprint
of
it.
Based
on
our
recent
correspondence, Runge
and
I
have deferred
our
planned
publications
and intend
to return to
them,
should the occasion
arise,
once we
have
a
complete
overview of
the
currently
available literature.[2]
The Planck week
was
very stimulating.[3]
Pl[anck]
will
give
you
the best
report
about it
himself,
and wanted in
particular
to make the
request
that
you join
the
German
Mathematicians Association
as a
member
(annual
contribution
2 marks,
registration
with
Privy
Councillor Prof. Krazer in Karlsruhe in
B[aden],[4]
57
Westend
Street;
I
can
also
arrange
the
matter
myself,
of
course).
Very
truly
yours,
Klein.