British philosopher and mathematician who won the Nobel Prize for Literature in 1950. TLS, one page, 8 x 5, personal letterhead, April 18, 1963. A thank you note, in part: “Thank you very much for your recent letter. I was encouraged to see your letter to ‘The Observer’ concerning John Strachey and Herman Kahn and am grateful to you for sending me a copy.” In fine condition, with light adhesive residue along left border. R&R COA.