Madeleine L'Engle (1918-2007) was the recipient of the Newbery Medal, the National Book Award, and the National Humanities Medal among many other honors over the course of her remarkable career. Most famous for A Wrinkle in Time, she was the author of more than sixty books, including young adult and adult fiction, poetry, autobiographies, and books on religion. Born in New York City and educated at Smith College, she was for many years associated with the Cathedral of St. John the Divine in New York as librarian and writer-in-residence. Leonard S. Marcus is one of the world's leading writers on children's books and the people who create them. He is the author of Margaret Wise Brown- Awakened by the Moon, Dear Genius- The Letters of Ursula Nordstrom, The Annotated Phantom Tollbooth, and Listening for Madeleine- A Portrait of Madeleine L'Engle in Many Voices, among other books. He reviews children's books for The New York Times, teaches at New York University and the School of Visual Arts, and lectures around the world.