7 2 D O C U M E N T S 6 1 – 6 3 S E P T E M B E R 1 9 2 7 can also express myself in French. I do not believe that it is necessary for you to come to Berlin on account of this matter.[3] If I am unable to ensure that the com- mission’s purview goes beyond merely informational work, I will not remain on the commission. In the meantime, I thank you for the documents,[4] best regards, your A. Einstein 61. To Carl Willig Berlin, 24 September1927 Dear Mr. Willig, The content of your letter[1] is complete nonsense. I urgently advise you to keep these ideas to yourself, because otherwise doubts about your mental health might arise. Respectfully yours, A. Einstein 62. To Leo Kohn Berlin, 28 September 1927 Dear Mr. Kohn, You may need to convey to a few bosom friends, with or without the seal of si- lence, my message regarding my planned withdrawal from the board of trustees and academic council.[1] The goal will be better achieved that way than through an official communication, which would be perceived as a not very tactful threat and merely engender defiance. Kind regards, 63. To the Nobel Prize Committee for Physics Berlin, 28 September 1927 I am taking the liberty of recommending Professor Arthur Compton for the No- bel Prize for Physics, for the discovery of the Compton effect named after him, be- cause this discovery is a landmark in the development of our knowledge of the nature of radiation.[1] Respectfully yours,