Massachusetts' 1642 law Old Deluder Satan Law Source https://en.wikipedia.org/wiki/Massachusetts_School_Laws view article Old Deluder Satan Law of 1647 Old Deluder Satan Law http://en.wikipedia.org/wiki/Massachusetts_School_Laws Ignorance is a deadly sin. http://en.wikipedia.org/wiki/Massachusetts_School_Laws Old Deluder Satan Law of 1647 legislation school laws legislation Old Deluder Satan Law "Old Deluder Act" of 1647 Massachusetts School Laws