<Li> Ignorance Is Bliss (album), a 1999 album by Face to Face </Li> <Li> Ignorance Is Bliss (House), a 2009 episode of House </Li> <Li> "Ignorance is Bliss", a song by punk rock band Ramones, from their Brain Drain (album) (1989) </Li> <Li> "Ignorance is Bliss", a song by San Francisco' 90s rock band Jellyfish, from the compilation album Nintendo: White Knuckle Scorin' (1991) </Li>

Where does the expression ignorance is bliss come from