John Stuart Mill: Utilitarianism, Quotes and Theory

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  • 0:05 Ethics the Mill Way
  • 1:20 The Life of John Stuart Mill
  • 2:46 Key Concepts
  • 3:28 Utilitarianism
  • 5:29 On Liberty
  • 8:12 Mill in Action
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Lesson Transcript
Instructor: Ellie Green

Ellie holds a B.A. with Honors in English from Stanford University. She is pursuing a Ph.D. in English Literature at Princeton University.

Join us for this analysis of nineteenth century British philosopher John Stuart Mill, whose radical political and ethical ideas based in utilitarianism have had a profound effect in the final frontier and on our current political landscape.

Ethics the Mill Way

Have you ever seen Star Trek II: The Wrath of Khan? You might know it by someone yelling 'KHAAAAN!' really loud and angrily. It's okay if you haven't - not everyone's a Trekkie. But you've probably heard about the climactic scene in that film, where the Enterprise's first officer Spock sacrifices himself to save his crewmates and, by extension, a whole lot of other people. Right before he dies, Spock tells his superior officer, Captain Kirk, that 'the needs of the many outweigh the needs of the few.' This is a pretty classic example of utilitarianism, the philosophy that today's subject, one Mr. John Stuart Mill, is most associated with.

Throughout his life, John Stuart Mill (or JSM, as I like to call him for short) contributed to a variety of philosophical disciplines, including logic, epistemology, economics, religion and metaphysics, but it's really his work in political and ethical philosophy that has garnered him the most longevity and fame (it's okay if you've never heard of him). He produced dozens of texts in his lifetime, but the two writings that stand above the rest are 1859's On Liberty and 1863's Utilitarianism. Those texts led fellow philosopher Henry Sidgwick to note upon Mill's death: 'I should say that from about 1860-65 or thereabouts he ruled England in the region of thought as very few men ever did.' Pretty high praise.

The Life of John Stuart Mill

But before we talk about how John Stuart Mill died, let's talk about how he lived. He was born on May 20, 1806 in London, England, to Harriet Burrow and noted economist James Mill - he's already off to a good start genetically. James was an educated fellow heavily involved in the early nineteenth century movement called 'philosophic radicalism,' which led to him pushing his son's education from an early age - John studied Greek at age three and Latin at eight, and he was made to recite everything he'd learned to his father each night. Pretty intense. John was also responsible for educating his eight younger siblings, which is a huge deal.

Education was really important to him from a very early age, and that rich educational connection to his father really defined Mill's career. He was obsessed with merging the rational, Enlightenment-influenced philosophic radicalism of Mill Senior with his own interest in the more humanistic, emotional Romanticism, particularly the works of Samuel Coleridge, Johann Wolfgang von Goethe, William Wordsworth and many others.

Mill felt that his own upbringing lacked the aspects of imagination and humanities that are so crucial to the Romantics, but he really appreciated and loved his father's devotion to what could be called radical empiricism, or a stringent belief that everything one can and should know about the world is observable. You may have heard of empirical evidence - something that can be observed and scientifically proven.

Key Concepts

Before we get into a discussion of Mill's more defining works, there are a few key concepts that it's helpful to know because they show up in all of his writings. One that we already mentioned is utility, which literally means usefulness, and we'll talk about it more fully in a second. The other is naturalism, and that's a philosophy that denies that there is really anything outside our empirical world that can be known or really is even worth knowing.

Finally, there's anti-institutionalism, a by-product of both of those beliefs that rails against the social institution (against 'The Man,' if you will) - churches, governments, etc. - that don't abide by those naturalistic principles. Keeping those three principles in mind, let's take a look at his works.


Although On Liberty was published earlier, I think we should talk about Utilitarianism first because I think it's really Mill's most iconic text. It was released in 1861 in a serialized magazine format and then as a book in 1863. This text lays out a full definition of Mill's conception of 'utility,' the central framework of his philosophy in politics, ethics and pretty much everything else. He defines the utilitarianism theory like this:

(A)ctions are right in proportion as they tend to promote happiness; wrong as they tend to produce the reverse of happiness. By happiness is intended pleasure and the absence of pain; by unhappiness, pain and the privation of pleasure.

This is a fairly simple rule that can get complicated pretty quickly. For Mill, happiness is the only thing that has intrinsic value; in other words, it's the only thing we find valuable without any external validation. But what makes us happy? Mill thinks we can only figure that out through careful personal introspection - which means that utilitarianism is, at its base level, a very individualistic philosophy. But then, how would that function in a larger society? If Spock was a utilitarian, why would he sacrifice himself for 'the good of the many'? I mean, that probably wouldn't make him very happy.

For Mill, the key to emphasize is that society is nothing but a collection of individuals. In an earlier work called A System of Logic, he had this to say about society: 'Men, however, in a state of society, are still men; their actions and passions are obedient to the laws of individual human nature. Men are not, when brought together, converted into another kind of substance with different properties.'

By extension, therefore, Mill thinks that what makes one person happy should end up making society happy. The only exception to this is when Mill notes that individuals must never infringe upon the rights of others - everyone has the right to seek their own happiness, but no one has the right to take away someone else's. Mill spells this theory out a little more clearly in another one of his major texts.

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