John Stuart Mill (1806 – 1873) established the necessity of reducing rulers and political power that could harm society.

John Stuart Mill (1806 – 1873) was the most influential English philosopher and political economist of the nineteenth century and one of the most influential thinkers in the history of classical liberalism.
Mill conceived of liberty as justifying the freedom of the individual in opposition to unlimited state and social control. Mill was a proponent of utilitarianism and contributed to the investigation of scientific methodology.

Mill defined social liberty as protection from the tyranny of political rulers and the tyranny of the majority. He established the necessity of reducing rulers and political power that could harm society.

As a member of the Liberal Party and author of the early feminist work The Subjection of Women. Mill was also the second Member of Parliament to call for women's suffrage in 1832.