Can science tell us right from wrong? Author Sam Harris argues that science can, in principle, help us understand what we should do and should want in order to live the best lives possible. The foundation of our morality, he says, is in our conscious minds as sentient creatures, which are dependent upon the laws of nature. "The variables that can affect our states of being in this world fall, potentially, into the various bins of science — from genetics to neurobiology to psychology