German Jewish philosopher and writer (1878–1965) who evolved a philosophy inspired by study of Hasidism and based on the encounter of man with nature, man, and God. ALS in German, one page, 7 x 12, March 31, 1954. Self-contained untranslated air mail letter written from Jerusalem. Buber also addresses the mailing panel, signing “Prof. M. Buber,” on the return address area. In fine condition, with intersecting folds, one through a single letter of signature, two punch holes to left edge, and a bit of trivial toning. RRAuction COA.