Reason

Publication History

• Published in Astounding magazine
• Collected in I, Robot (1950) by Isaac Asimov
  • Collected in Isaac Asimov (1981) by Isaac Asimov
• Collected in A Century of Science Fiction (1962) edited by Damon Knight
• Collected in Space Odysseys (1974) edited by Brian W. Aldiss
• Collected in Decade the 1940s (1975) edited by Brian W. Aldiss, Harry Harrison
• Collected in Science Fiction of the 40's (1978) edited by Frederik Pohl, Joseph D. Olander, Martin H. Greenberg
• Collected in The Road to Science Fiction Volume 3: From Heinlein to Here (1979) edited by James E. Gunn
• Collected in The Complete Robot (1982) by Isaac Asimov
• Collected in Science Fiction: A Historical Anthology (1983) edited by Eric S. Rabkin
• Collected in The Robot Collection (1983) by Isaac Asimov
  • omnibus edition
• Collected in Isaac Asimov Presents the Best Science Fiction Firsts (1984) edited by Charles G. Waugh, Isaac Asimov, Martin H. Greenberg
• Collected in Robot Visions (1990) by Isaac Asimov
• Collected in Read into the Millennium: Tales of the Future (1999) edited by Editors of Read Magazine