John Stuart Mill was a British philosopher who lived from 1806 to 1873. He was a known and respected philosopher during his lifetime. His major works include Utilitarianism, A System of Logic, The Subjection of Women, and On Liberty. Mill was influenced by Jeremy Bentham, another utilitarian. Mill believed that the principle of utility should guide morality, stating "actions are right in proportion as they tend to promote happiness, wrong as they intend to promote the reverse of happiness" (161).
Collinson, D. & Plant, K. (2006). Fifty major philosophers. (2nd ed.). New York, NY: Routledge.