German theoretical physicist (1901–1976) awarded the 1932 Nobel Prize in Physics for the creation of quantum mechanics. ALS in German, one page, 8.25 x 11, personal letterhead, June 30, 1962. Untranslated letter to Blanche Schlick, widow of Moritz Schlick, thanking her for sending a copy of her husband’s posthumously published book of aphorisms. In fine condition, with intersecting folds. Accompanied by the original mailing envelope, addressed in Heisenberg’s own hand. The book, entitled ‘Aphorismen,’ was a small volume of aphorisms complied and edited by Blanche Schlick, first released in 1962. Heisenberg and Moritz Schlick had begun corresponding around 1930, and they shared similar scientific and philosophic worldviews. A scarce handwritten letter with an important association between influential physicists. Pre-certified PSA/DNA and RR Auction COA.
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