There is only one catch. Even his brain tissue is invariant - exactly the way it was before he treated himself! He cannot get any more memories or otherwise adapt to environment, because his mind always repairs itself to the state just before the treatment!!
- Isaac Asimov & Martin H Greenberg (Eds)' "Isaac Asimov Presents the Great SF Stories 6 (1944)".
- John W Campbell, Jr (ed)'s "The Astounding Science Fiction Anthology".
Fact sheet.First published: Astounding, April 1944.
Listed among the stories from John Campbell's Astounding/Analog.
Related: Stories from Analog/Astounding.