How do we decide what is morally right and wrong? Historically, there have been two answers to this question. Either the human mind deliberates moral judgments based on a set of principles or the mind relies on intuitions mediated by emotions. Harvard Psychology professor Marc Hauser argues that morality, at some level, may be hard-wired into our brains, as an innate 'moral grammar' that has evolved with us over time. That intuitive mechanism may be more important in what shapes our moral decision than what we learn from school, church, or family.