Evolutionary biologists explain altruism as an adaptive behavior that enhances the survival of a particular gene pool. If one animal takes care of another and its young, that increases the chance that the animal will reciprocate. None of this is intentional, simply a manifestation of a trait that has survived through DNA programming. I like to think that humans recognize a common thread that unites us as humans with certain fundamental rights, which in turn prompts us to extend altruistic consideration to others. Sure, some do good deeds for the publicity or some sort of anticipated reward, but others engage in altruism because of a humanist approach: the recognition that others deserve our consideration. We overcome what Richard Dawkins referred to as the "selfish gene."