Thomas Merton (January 31, 1915 – December 10, 1968), religious name M. Louis, was an American Trappist monk, theologian, mystic, poet, and social activist. He was a professed member of the Abbey of Our Lady of Gethsemani, near Bardstown, Kentucky, living there from 1941 to his death.
Merton wrote more than 50 books in a period of 27 years, mostly on spirituality, social justice, and pacifism, as well as scores of essays and reviews. Among Merton's most widely-read works is his bestselling autobiography The Seven Storey Mountain (1948).
Merton became a keen proponent of interfaith understanding, exploring Eastern religions through study and practice. He pioneered dialogue with prominent Asian spiritual figures.