Toni Morrison is an American novelist, essayist, editor, teacher and professor emeritus at Princeton University.Morrison won the Pulitzer Prize and the American Book Award in 1988 for Beloved. The novel was adapted into a film of the same name in 1998. Morrison was awarded the Nobel Prize in Literature in 1993. In 1996, the National Endowment for the Humanities selected her for the Jefferson Lecture, the U.S. federal government's highest honor for achievement in the humanities. She was honored with the 1996 National Book Foundation's Medal of Distinguished Contribution to American Letters. Morrison wrote the libretto for a new opera, Margaret Garner, first performed in 2005. On May 29, 2012, President Barack Obama presented Morrison with the Presidential Medal of Freedom.