In Good Natured Frans de Waal, ethologist and primatologist, asks us to reconsider human morality in light of moral aspects that can be identified in animals. Within the complex negotiations of human society, a moral action may involve thoughts and feelings of guilt, reciprocity, obligation, expectations, rules, or community concern. De Waal finds these aspects of morality prevalent in other animal societies, mostly primate, and suggests that the two philosophical camps supporting nature and nurture may have to be disbanded in order to adequately understand human morality. A theoretician, de Waal is meticulous in his research, cautious not to extrapolate too much from his findings, and logically sound in his arguments. He also writes with precision and a flair for the dramatic, carrying readers along with graceful ease and vivid examples.