''Somebody has been cashing checks and they've been bouncing back on us,'' ''And these people, the poor class of Negroes and the poor class of white people, they're getting tired of it. And sooner or later it's going to bring on a disease on this country, a disease that's going to spring from midair and it's going to be bad. It's like a spirit from some dark valley, something that sprung up from the ocean. . . . Like Lucifer is on the earth.''  -Howlin Wolf