1 5 2 D O C U M E N T S 1 2 9 , 1 3 0 D E C E M B E R 1 9 2 5 Anyone[7] who has read your papers, anyone who has had the good fortune, as I have, of hearing your lectures and attending meetings under your leadership,[8] knows the special charm that emanates from your personality. With a fine sense for things and persons, refreshing humor, and modest dedication, you guide people im- perceptibly onto the right path. Few have suffered as you have under Europe’s misfortune [9] and you sought with all your might to restore harmonious cooperation.[10] That is why we also love and honor you as a person, not just as a researcher. Few are endowed with the ability to create masterpieces, fewer still are capable of shaping their own lives into a masterpiece. You have been granted this and we happily laud you for it. May destiny bless you and your lifework, as it has to this day! 129. To Elsa Einstein [Leyden, 11 December 1925][1] Dear Else, The Lorenz celebration just ended, wonderful.[2] I don’t know why I am always made out to be so bad. You misinterpret everything. I recounted the business with Cologne to Ehrenfest as a curiosity.[3] The bit about the postage and the package was also intended to be totally good-natured.[4] I’m glad Ilse is feeling better. With the elderly, it is, so to speak, part of the deal.[5] I have to catch the train to Haarlem[6] Best wishes, your Albert 130. From Mieczysáaw Wolfke[1] Berlin, 13 December 1925 Dear Mr. Einstein, Following up on our talk yesterday evening, I have in the meantime calculated the sensitivity of my measuring method. Using reasonable dimensions of the appa- ratus, charge differences between a proton and an electron of as much as 10–21 pos- sibly 10–22 can be detected by electric deflection.[2] For my part, I would very gladly risk this experiment but will, however, rely en- tirely on your opinion and follow your advice. Please write a couple of lines to me in Warsaw as to whether you consider the performance of such an experiment de-
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