“Christopher!” Matthew exclaimed, delighted. “You sly dog! Do I know her?” “No, I cannot think so,” said Christopher. “She is a mundane.” “Christopher, you dark horse,” said Matthew. “What is her name?” “Mrs.—” “A married lady!” Matthew said, overwhelmed. “No, no. I beg your pardon. Please go on.” “Mrs. Marie Curie,” said Christopher. “I believe her to be one of the preeminent scientists of the age.