The business of government is to promote the happiness of the society, by punishing and rewarding. That part of its business which consists in punishing, is more particularly the subject of penal law. In proportion as an act tends to disturb that happiness, in proportion as the tendency of it is pernicious, will be the demand it creates for punishment. What happiness consists of we have already seen: enjoyment of pleasures, security from pains.
(Jeremy Bentham, An Introduction to the Principles of Morals and Legislation, ed. J. H. Burns and H. L. A. Hart, in The Collected Works of Jeremy Bentham, ed. F. Rosen and Philip Schofield [Oxford: Clarendon Press, 1996], chap. 7, sec. 1, p. 74 [book first published in 1789])