Maybe I disagree. We are not a bunch of generic units tumbling with the forces around us. If we were, we'd just be totally miserable all the time and unable to change anything. We are that nearely. But I think, contrary to popular belief, that we are and are of what I know as spirits. (here we go again). Spirit/spirits operate and are driven by natural desire. Natural desire is impetus. A person is as if, a conversation amongst the spiritly unit, a person, the self. As any person is made up of unique spirits, a person, simply existing, is separate and different from any other, yet still full of desire so the person/unit is forever pursuing it's own unique desire.