Mill was convinced that the moral and intellectual advancement of humankind would result in greater happiness for everybody. He asserted that the higher pleasures of the intellect yielded far greater happiness than the lower pleasure of the senses. He conceived of human beings as morally and intellectually capable of being educated and civilised. Mill believed everyone should have the right to vote, with the only exceptions being barbarians and uneducated people.

Mill argues that people should be able to vote to defend their own rights and to learn to stand on their two feet, morally and intellectually. This argument is applied to both men and women. Mill often used his position as a member of Parliament to demand the vote for women, a controversial position for the time.

In Mill's time a woman was generally subject to the whims of her husband and/or father due to social norms which said women were both physically and mentally less able than men, and therefore needed to be "taken care of." Contributing to this view were social theories, i.e. survival of the fittest and biological determinism, based on a now considered incorrect understanding of the biological theory of evolution and also religious views supporting a hierarchical view of men and women within the family. The archetype of the ideal woman as mother, wife and homemaker was a powerful idea in 19th century society.

The Subjection of Women is the title of an essay written by John Stuart Mill in 1869, possibly jointly with his wife Harriet Taylor Mill, stating an argument in favour of equality between the sexes. At the time it was published in 1869, this essay was an affront to European conventional norms for the status of men and women.

John Stuart Mill credited his wife, Harriet Taylor Mill, with co-writing the essay. While some scholars agreed by 2009 that John Stuart Mill was the sole author, it is also noted that some of the arguments are similar to Harriet Taylor Mill's essay The Enfranchisement of Women which was published in 1851. Harriet Taylor Mill's daughter, Helen Taylor, is believed to have contributed to the essay as well.

John Stuart Mill (20 May 1806 – 8 May 1873) was a British philosopher, political economist and civil servant. He was an influential contributor to social theory, political theory and political economy. He has been called "the most influential English-speaking philosopher of the nineteenth century". Mill's conception of liberty justified the freedom of the individual in opposition to unlimited state control.