A Case of Conscience
Father Ramon Ruiz-Sanchez S.J., is a part of a four man scientific commission to the planet Lithia, there to study a harmonious society of aliens living on a planets which is a biologist's paradise. He soon finds himself troubled: how can these perfect beings, living in an apparent Eden, have no conception of sin or God? If such a sinless Eden has been created apart from God, then who is responsible?
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James Blish
James Benjamin Blish (1921–1975) was an American author of fantasy and science fiction. He also wrote literary criticism of science fiction using the pen name William Atheling Jr.
Picture: Gravestone of James Blish, Holywell Cemetery, Oxford, England.
After Such Knowledge
After Such Knowledge consists of three books. The current recommended reading order for the series is provided below.
Related series The Devil's Day

