James Blish × Mary Doria Russell

James Blish's *A Case of Conscience* (1958) and Mary Doria Russell's *The Sparrow* (1996) are the two great Jesuit-in-space novels, and they arrive at precisely inverted terrors. Father Ruiz-Sanchez encounters Lithia, a world of rational, sinless beings, and concludes it must be a demonic illusion — perfection without God is the ultimate snare. Father Emilio Sandoz encounters Rakhat, a world of devastating beauty whose music seems to confirm divine intention, and is then systematically broken by the very creation he took as evidence of grace. Blish's priest is undone by too much order; Russell's by too much trust. What links them is the specific Catholic anxiety that the universe might be legible — that it might *mean something* — and that reading it correctly could cost you everything. Both novels also share a structural suspicion of the scientific mission itself: the contact expedition as a vehicle not for discovery but for the violent testing of faith. Blish resolves this with a theological exorcism that doubles as planetary destruction. Russell resolves it with silence and scars. Neither resolution is comforting, which is the point.