Isaac Bashevis Singer (Yiddish: יצחק באַשעװיס זינגער‎; November 21, 1902 – July 24, 1991) was a Polish-born Jewish author in Yiddish, awarded the Nobel Prize in Literature in 1978. The Polish form of his birth name was Icek Hersz Zynger. He used his mother's first name in an initial literary pseudonym, Izaak Baszewis, which he later expanded to the form under which he is now known. He was a leading figure in the Yiddish literary movement, writing and publishing only in Yiddish.