Ellison also wrote many of the stories to reflect subjects and themes that commonly occur in his work. "Twilight in the Cupboard" and "The Silence" both prominently feature the themes of Jewish assimilation and the Holocaust. The former was inspired in part by Ather D. Morse's 1967 book "While Six Million Died". "Eruption" and "Ammonite" embody the lost city/Atlantis theme present in much of Ellison's work. "Metropolis II" also incorporates themes from many of Ellison's other stories. In particular, it mixes autobiographical details with fiction in a manner similar to "All the Lies that are My Life" and other stories.