Everyone agrees that human psychology consists of reasoning and moral intuition, otherwise known as head and heart. The point of contention is which part is more important and more dominant. The ancient Greek philosopher Plato argues that reason could always be the master and in control of the human body. Jonathan Haidt, a moral psychologist at New York University’s Stern School of Business disagrees with this view. In his work, he tries to analyze the origin of morality, the conflict between the head and the heart, why people gather themselves in groups and what implications his findings have on topics like religion or politics.