With this I can agree that our body has most of the answers to the questions about our actions. However, some of these causes do not necessarily have to lie in our chemical composition, there may be cases where the causes are not chemical and are just how we are. For example, there is no chemical explanation for being gay. Charles Murray in his book The Bell Curve “argues not only that intelligence is genetically heritable, but also that there are racial and ethnic differences that explain why whites are socioeconomically better off than blacks.” However, although intelligence may be hereditary it does not mean that intelligence cannot be developed, we all have intelligence to varying degrees, but it is a question of how much it is developed to make real good use of it..