Full Idea
The interest of the community is the sum of the interests of the several members who compose it.
Gist of Idea
The community's interest is a sum of individual interests
Source
Jeremy Bentham (Intro to Principles of Morals and Legislation [1789], I.4)
Book Reference
Mill,John Stuart: 'Utilitarianism (including On Liberty etc)', ed/tr. Warnock,Mary [Fontana 1962], p.35