Brilliant American physicist (1904–1967) who directed the Institute for Advanced Study in Princeton and who spearheaded the Manhattan Project, leading to the development of the first atomic bomb. TLS, one page, 5.5 x 6.5, The Institute for Advanced Study letterhead, August 26, 1963. Letter to Norman Cousins of the Saturday Review, in full: "I very much liked your letter in the TIMES yesterday. I hope that you will like this very brief talk that I gave last June in Chicago. With warm good wishes." In fine condition, with light creases and staple holes to the upper left corner. Cousins was an American political journalist, author, and professor, who advocated on behalf of nuclear disarmament and world peace, which he promoted through his writings in the Saturday Review. Cousins also served as president of the World Federalist Association and chairman of the Committee for Sane Nuclear Policy.