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.
Mill expresses his view on freedom by illustrating how an individual's amelioration of personal quality and self-improvement is the sole source of true freedom. That only when an individual is able to attain such a beneficial standard of one's self, whilst in the absence of rendering external onerosity upon others, in their own journey to procure a higher calibre of self-worth, that true freedom resides. Mill's attitude toward freedom and individual accomplishment through self-improvement has inspired many. By establishing an appreciable level of worthiness concerned with one's ability to fulfill personal standards of notability and merit, Mill was able to provide many with a principal example of how they should achieve such particular values.