Why did Captain Beatty believe that books should be destroyed?

Captain Beatty believes that books should be destroyed, because he feels that they are useless and only bring stress and worry to people. Captain Beatty is a character from the book "Fahrenheit 451" by Ray Bradbury.

"Fahrenheit 451" is set in the 24th century and tells the story of a fireman, Guy Montag, whose job is to burn illegal books and their owners' houses. Eventually, Montag starts to question what he is doing and undergoes a drastic change, running away from the society he's familiar with to make friends with a network of intellectuals living underground. With them, Montag sees his old city destroyed, but he commits himself to rebuilding a new society that is literate and values culture.