What is our conscience? We all understand how to express what a conscience is; it is a sort of inner voice that we use to determine what is good or bad, but what is it really? While that is a question science struggles to answer, one theory is that it is the emotional response created when we think about our future/past actions. This allows us to reflect on the consequences of our previous actions in order to determine whether our future actions are good or bad. But there is another inner voice, one which contests the verdict of our conscience. A voice with only our self interests at heart.