Satan has no power except in a human body. — M. Scott Peck

The reality of the matter is that the naming of evil is still in a primitive stage.

The only power that Satan has is through human belief in its lies.

... As (Malachi) Martin points out, it is terribly important to understand that Satan is a spirit. I have said I have met Satan, and this is true. But it is not tangible in the way that matter is tangible. It no more has horns, hooves, and a forked tail than God has a long white beard. Even the name, Satan, is just a name we have given to something basically nameless... It is spirit.