160
DOCS. 218-220 AUGUST
1910
218. To
Ludwig
Hopf
[Zurich,
2
August
1910][1]
Dear
Mr.
Hopf:
I
thank
you
& your
parents[2]
for the kind
invitation. But
I
could not
come
because
I
asked
Mr.
Gaule
to
come
to
the Institute
this
morning.[3]
Tomorrow
(Wednesday I
am
going
to visit
my youngster
in Winterthur.[4]
After that
I will
again
have time. So
come
whenever
you
want. It would be
best
if
you
would write
me
a
postcard
beforehand.
With
kindest
regards
to
you
&
your
parents,
your
A.
Einstein
219. To
Conrad Habicht
[Zurich,
11
August 1910]
Dear
Konrad,
Mr. Lewinowitsch
is
coming again
tomorrow
(Friday)
evening.[1]
I
would be
very
pleased
if
you
too would
come
again.
With
best
regards,
your
A. E.
When
will
you
come
for
some
experimentation?[2]
220. To
Paul Hertz
[Zurich,
14
August 1910]
Dear
Mr.
Hertz:
I
was extremely pleased
with
your
paper.[1]
I would like
it
very
much if
we
could
discuss
the
points
of
contention
in
person,
because
a
controversy
in
the Annalen
is not
a
pretty
thing.
We will
no
doubt
clarify everything
and
come
to
an
agreement.
I would
like it
best
if
you
visited
me
here
in
Zurich. I'll
be
here
all
the
time
except
for the
beginning
of
September.[3]
With
best
regards,
your
A.
Einstein