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Anthropologist Clyde Kluckhohn has noted the following: Every culture has a concept of murder, distinguishing this from execution, killing in war and other justifiable homicides. The notions of incest and other regulations upon sexual behavior, the prohibitions on untruth under defined circumstances, of restitution and reciprocity, of mutual obligations between parents and children—these and many other moral concepts are altogether universal.17
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Scott B. Rae (Moral Choices: An Introduction to Ethics)