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253. From Heinrich Zangger
Zurich, [between 3 and 16] October
[Not selected for translation.]
254. To Ludwik Silberstein[1]
Berlin, 4 October 1921
Dear Colleague,
I owe you much gratitude for your kind mediation in the unsavory newspaper
and I am wholeheartedly pleased that you eliminated part of the evil
incurred by reckless persons. But the most important thing is that discerning and
independent people continue to understand one another; the crowd always remains
unreliable and unsteady like water. I have nothing against publication of my letter,
of course, but I doubt whether it is good to lend so much weight to the unpleasant
affair by thus constantly coming back to
Now to the question of my appointment to
It moved me very much
that our colleagues Gale and Michelson are ready to offer me such a wonderful
position in close proximity to them. The prospect of working closely with these
men, and above all also with you, has exceptional attraction for me. I am also con-
vinced that such a collaboration would be very satisfying and productive. And yet
I cannot follow this fine call. Although it is true that I had some ugly experiences
with colleagues and students here, I am so firmly rooted here by family ties and
friendships that without real necessity I could not take the decision to choose an
entirely new environment, however attractive. Wherever one has lived for a longer
period and made personal ties, one leaves behind a large piece of oneself, and at my
age one isn’t as able to start all over to make so complete a change of milieu feasi-
ble without substantial damage. So please convey to our colleagues my deep sense
of gratitude; you will surely appreciate the inner conflict that does not permit me
to take such a radical decision.
Now to the
My earlier observation was entirely
one can
put all the problems like this:
Let there be an inertial system from which the motion of the light sources L M
N . . . are given. Furthermore, the position of the observer and his velocity are given
at the time of observation. In which directions does he see L M . . .?
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