Master of Insanity Lyrics

Lyric discussion by revanchist 

Cover art for Master of Insanity lyrics by Black Sabbath

Well, I think the last line of the song is really revealing. It's about the madman within us all. It's kind of a darker version of "Heaven and Hell". We are the cause of all good and all evil in this world, so we have the power to "open our eyes" and do the right thing, or we can choose to be egoistic and uncaring.