|Notes ||A Case of Conscience is a science fiction novel by American writer James Blish, first published in 1958. It is the story of a Jesuit who investigates an alien race that has no religion yet has a perfect, innate sense of morality, a situation which conflicts with Catholic teaching. |
The story was originally published as a novella in 1953, and later extended to novel-length, of which the first part is the original novella.
The novel is the first part of Blish's thematic After Such Knowledge trilogy: it thus follows Doctor Mirabilis and both Black Easter and The Day After Judgment (two novellas that Blish viewed as together forming the third volume of the trilogy).