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315. From Maja Winteler-Einstein
Fiesole, 8 via Verdi, 7 December [1921]
[Not selected for translation.]
316. From Walther Bothe[1]
Charlottenburg, 8/12 Werner-Siemens St., 7 December 1921
[Not selected for translation.]
317. To Henri Barbusse
Berlin, 9 December 1921
[Not selected for translation.]
318. To Theodor Kaluza
[Berlin,] 9 December [1921]
Dear Colleague,
Yesterday I submitted your paper at the
Academy;[1]
so you will soon be receiv-
ing the correction proofs. Do not correct very much, because the author has to pay
for corrections if their cost exceeds 10% of the printing
costs.[2]
Your idea is truly
tempting. There must be some truth to it somewhere. Actually, it is not necessary
to declare the electron as matter by means of an energy
tensor.[3]
One would like to
think that it should be defined by the field equations alone; for the energy tensor of
matter is just a stopgap in the phenomenological description, if one does
not go into the molecular structure. In the end, the field-matter dualism has to
disappear.[4]
Best regards from your
A. Einstein.
319. To Louis G. Du Pasquier
Berlin, 10 December 1921
[Not selected for translation.]