1. John Stuart Mill in 1865

2. Biography of John Stuart Born20 May 1806 Pentonville, London, EnglandDied8 May 1873 (aged 66) Avignon, FranceEra19th-century philosophy, Pentonville Avignon19th-century philosophy Classical economicsRegionWestern PhilosophySchoolEmpiricism, utilitarianism, liberalismMain interestsPolitical philosophy, ethics, economics, inductive logicNotable ideasPublic/private sphere, hierarchy of pleasures in Utilitarianism, liberalism, early liberal feminism,harm principle, Mill's Methods Classical economicsSchoolEmpiricismutilitarianismPolitical philosophyinductive logicharm principleMill's Methods

3. Life of John Stuart Mill John Stuart Mill (1808–1873) carried on the Utilitarian tradition and became the most famous and effective advocate of the philosophy. Mill's father, James, was also a philosopher of note and was a staunch supporter of Bentham and his beliefs. John Stuart Mill's book Utilitarianism elabortes and improves upon the philosophy espoused by Bentham. Mill agreed with Bentham about pleasure and pain and morality

4. Mill's Version of Utilitarianism J. S. Mill agreed with Bentham on the basic principle of utility, namely that “Actions are right in proportion as they tend to promote happiness, wrong as they tend to promote the reverse of happiness. By happiness is intended pleasure and the absence of pain; by unhappiness, pain, and the privation of pleasure.” But Mill made a distinction that Bentham did not: Mill distinguished between the “quality” of pleasures, not just the “quantity” as Bentham had done in his hedonic calculus.

5. Mill's Version of Utilitarianism Mill wrote Utilitarianism in response to criticisms abut Jeremy Bentham's hedonistic version of utilitarianism, which failed to differentiate between the kinds and quality of different pleasures and — because of its talk of pleasures — had received the name of a “pig philosophy.”

6. Mill's Version of Utilitarianism John Stuart Mill's utilitarianism emphasized quality of pleasure rather than the quantity. “It is better to be a human being dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied. And if the fool, or the pig, is of a different opinion, it is because they know only their side of the question. The other party to the comparison knows both sides.”

7. John Stuart Mill Quotations He who knows only his own side of the case knows little of that. Conservatives are not necessarily stupid, but most stupid people are conservatives. Although it is not true that all conservatives are stupid people, it is true that most stupid people are conservative. Conservatives are not necessarily stupid, but most stupid people are conservatives.