Signed limited first edition, one of 760 copies signed and dated "Albert Einstein '49." Octavo, original brown cloth, top edge gilt, original slipcase. The book is in fine condition, the slipcase is in fine condition. Housed in the original publisher's cardboard. An absolute near mint example. Edited by Paul Arthur Schilpp. Frontispiece portrait of Einstein by Yousef Karsh. Rare and desirable in this condition. Written by the man considered the "Person of the Century" by Time magazine, this is not a glimpse into Einstein's personal life, but an extension and elaboration into his thinking on science. Two of the great theories of the physical world were created in the early 20th century: the theory of relativity and quantum mechanics. Einstein created the theory of relativity and was also one of the founders of quantum theory. Here, Einstein describes the failure of classical mechanics and the rise of the electromagnetic field, the theory of relativity, and of the quanta. "The greatest physicist of the 20th century" Signed Copy number 60.