It's from a highschool textbook, whose source I don't know, either. The lesson starts like this, and it's about the review about a play, Jekyll & Hyde.
The Battle Between Good and Evil JEKYLL & HYDE
Jekyll & Hyde is the story about a doctor whohas been working on a top secret experiment for years. Dr. Jekyll has always believedthat a person has two separate personal characters–one person is good and kind, and the other person is mean and evil.
Good and Evil, two different human natures inside of a man
Dangerous love and a mysterious game with beautiful melodies
Amazing ticket sales and attendance records
The most splendid show that only the best of the best actors could be in!