 Weinbaum died of lung cancer soon after, and a third installment in the series never saw fruition.Tweel remains one of the most recognised aliens in early science fiction, and is said to be an inspiration for aliens in the works of Isaac Asimov and Arthur C. Clarke.Asimov described Tweel as being the first creation in science fiction to fulfill John W. Campbell's request for "(...)a creature that thinks "as well" as a man, or "better" than a man, but not "like" a man."