Yes, Oh! a private buffoon is a light-hearted loon is also an excellent choice, too, and one that I'd debated referencing instead. But ultimately the "Whose so

Yes, Oh! a private buffoon is a light-hearted loon is also an excellent choice, too, and one that I'd debated referencing instead. But ultimately the "Whose soul was sad, and whose glance was glum," line in I have a song to sing O! and its reprise in the finale was what led me to pick that song to quote here. (Plus that song and the music is probably my favorite among the G&S canon. :-)