Nearly everyone thinks that it’s your brain, and how it varies from the brains of others, that defines your intelligence as an individual. The terms ‘brainy’ and ‘intelligent’ are used almost interchangeably. If you really want to know about intelligence then you need to know about the brain. You may come across questions like ‘How does the brain give rise to intelligence?’ or ‘Where does intelligence reside in the brain?’. It is generally believed that knowing more about the brain will tell us more about intelligence, and much else, including human nature itself.