The Golden Rule or ethic of reciprocity is a moral maxim or principle of altruism found in many human cultures and religions, suggesting it may be related to a fundamental human nature. The maxim may appear as either a positive or negative injunction governing conduct: One should treat others as one would like others to treat oneself (positive or directive form). One should not treat others in ways that one would not like to be treated (negative or prohibitive form). What you wish upon others, you wish upon yourself (empathic or responsive form). The Golden Rule differs from the maxim of reciprocity captured in do ut des - "I give so that you will give in return" - and is rather a unilateral moral commitment to the well-being of the other without the expectation of anything in return. The concept occurs in some form in nearly every religion and ethical tradition. It can also be explained from the perspectives of psychology, philosophy, sociology, and economics. Psychologically, it involves a person empathizing with others. Philosophically, it involves a person perceiving their neighbor also as "I" or "self". Sociologically, 'love your neighbor as yourself' is applicable between individuals, between groups, and also between individuals and groups. In economics, Richard Swift, referring to ideas from David Graeber, suggests that "without some kind of reciprocity society would no longer be able to exist."