Another perspective offered by the Enlightenment was the social contract theory, which posited that legitimate government was the result of an explicit or implicit social contract in which people had given up certain freedoms they enjoyed in the “state of nature” to receive the numerous benefits society had to offer, including law, order and civil rights. While no actual written contract exists between people, participation in society is seen as a tacit agreement to conform with the current social order. At the root of the social contract theory is the idea that the legitimacy of a government comes from the consent of the governed.
But perhaps no Enlightenment political philosophy aspired to turn itself into a science more than utilitarianism. First articulated by
Jeremy Bentham in his book
An Introduction to the Principles of Morals and Legislation in 1780, utilitarianism seeks to turn morals into pure computation. Bentham rejects both natural law and social contract theory to claim that morality ultimately derives from pleasure seeking and pain avoidance, and that political institutions should be built on this premise: