" In taking the veterinarian’s oath, she had pledged herself to a code of honor that bound her to the care of animals but also bound her to the saving of human lives through medicine. At times in her work, those two ideals clashed. She told herself that this research was being done to help find a cure for Ebola, that it was medical research that would help save human lives and might possibly avert a tragedy for the human species. That helped reduce her feelings of unease, but not completely, and she kept her emotions off to one side. "

― Richard Preston , The Hot Zone: The Terrifying True Story of the Origins of the Ebola Virus