
Winner of the Hugo Award - The future of Earth will rely upon one man's sense of right and wrong. . . . Father Ruiz-Sanchez is a dedicated man--a priest who is also a scientist, and a scientist who is also a human being. He has found no insoluble conflicts in his beliefs or his...



The sin of reason... Father Ruiz-Sanchez was a dedicated man--a priest who was also a scientist, and a scientist who was also a human being. He found no insoluble conflicts in his beliefs or his ethics until he was sent to Lithia. There he came upon a race of aliens--reptilian...


Father Ruiz-Sanchez is a dedicated man--a priest who is also a scientist, and a scientist who is also a human being. He has found no insoluble conflicts in his beliefs or his ethics . . . until he is sent to Lithia. There he comes upon a race of aliens who are admirable in every...

![A CASE OF CONSCIENCE Masterpieces of Science Fi... [Unknown] B003OSSKWU Book Cover](https://m.media-amazon.com/images/I/51bg0pkEXHL._SL500_.jpg)



Father Ruiz-Sanchez is a dedicated man--a priest who is also a scientist, and a scientist who is also a human being. He has found no insoluble conflicts in his beliefs or his ethics . . . until he is sent to Lithia. There he comes upon a race of aliens who are admirable in every...





The sin of reason... Father Ruiz-Sanchez was a dedicated man--a priest who was also a scientist, and a scientist who was also a human being. He found no insoluble conflicts in his beliefs or his ethics until he was sent to Lithia. There he came upon a race of aliens--reptilian...

The sin of reason... Father Ruiz-Sanchez was a dedicated man--a priest who was also a scientist, and a scientist who was also a human being. He found no insoluble conflicts in his beliefs or his ethics until he was sent to Lithia. There he came upon a race of aliens--reptilian...



