Quote by John Stuart Mill: “The only ground for interfering with individual liberty is self‑protection or preventing harm to others.”

Mill's 'harm principle' states that society can only restrict a person's freedom if their actions directly cause harm to others. Otherwise, individuals should be free to live as they choose, a cornerstone of liberal thought.

Laid out as the core argument in his influential essay *On Liberty*, advocating for extensive individual freedoms against state or societal interference, in an era of increasing industrialization and social control.

English philosopher and political economist who was one of the most influential liberal thinkers of the nineteenth century. His works On Liberty and Utilitarianism remain foundational texts in political philosophy and ethics.