A Case of Conscience Author:James Blish Father Ruiz-Sanchez---Jesuit member of a four-man scientific team investigating a new alien world---was very happy on Lithis, a biologist's paradise. He grew afraid only when it became clear that this extraordinary planet was paradise in all other respects as well. And this Ruiz knew could only be a trap---a gigantic trap, on a scale such as h... more »ad never been set for the human race before. But if he acknowledged that it was a trap---then Ruiz was himself a heretic, cast out and damned for eternity!« less