Empty Mind!!

It is always said that an empty mind is a devil’s workshop, But I really wonder if at any point in time can a human mind be empty or rather is any mind which is completely occupied isn’t evil. It makes me wonder what is the real state of a mind which is empty. Does an empty mind mean the brain is dead or is no more functional? or, Does it mean that the person has gone to a state of black out, if so it makes me wonder if people in today’s world are all in a black out state were they have all gone to a state of unconsciousness. A state in which no one knows about the real reason for their existence, a state in which they have forgotten their mere purpose of birth into this world. They are living a superficial life which co-exist between the divinely and beastly beings. Living to defeat others or rather finding peace in oneself by destroying others around is being considered the way of life in today's world. So I would like to rephrase the sentence to 
                                     "Any mind in today's world is devils workshop".