Marshall McLuhan (1911-80) was a pioneer Canadian theorist and educator in the fields of communication and media studies. He taught at the University of Toronto from 1946 to 1979 and became popular for his aphorism "the medium is the message," which summarized his view of the media's potent influence on shaping culture and styles of thinking. His major writings include The Gutenberg Galaxy (1962), Understanding Media (1964), and The Medium Is the Message (1967).