D O C U M E N T S 4 3 5 , 4 3 6 F E B R U A R Y 1 9 2 5 4 3 1
435. From Theodor Kaluza[1]
Königsberg, Pr., 34 Steinmetz St., 6 February 1925
Highly esteemed Professor,
In the enclosed I permit myself to forward to you an excerpt from my last talk
(at
Innsbruck).[2]
A student of mine wants to try to elaborate this idea
further.[3]

I myself can devote only little time to physics because my mathematical research
is claiming too much of my efforts, especially since I finally have to try to become
better known through intensive publication and thus perhaps put an end to my un-
satisfactory Cinderella existence here. Additionally, compelled by necessity, I de-
cided to meet with Prof.
Richter[4]
at the ministry soon about my future, in order to
obtain, if possible, greater economic security for my family than my current teach-
ing assignment affords; thus it would be extremely valuable to me if I could also
rely on a brief recommendation from you, highly esteemed Professor, so I can also
document my understanding of topics in the boundary fields of mathematical phys-
ics.
If the fulfillment of this request should seem possible to you, you would then be
indebting to most earnest gratitude your very devoted
Kaluza
436. To Elsa Einstein
[Leyden,] Tuesday [10 February 1925]
Dear Else,
It was a moving ceremony yesterday, where the blue collar was a great success,
especially among Leyden’s street urchins during the academic
procession.[1]
In the
cathedral a well-delivered address was framed by magnificent choruses, and the
queen received the honorary doctorate of
law.[2]
In the evening there was an enor-
mously filling banquet with countless speeches, where I sat between two quite in-
teresting men. I don’t yet know when I’ll be arriving back in Berlin, Saturday morn-
ing at the latest. The Ehrenfests are doing fine. They send greetings. The meeting
in Paris will probably take place only after my departure to South
America.[3]
Best regards to all of you from your
Albert.
About Eisner, I wrote to the influential man; he lives in
Amsterdam.[4]
I hope it
helps.
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