Freedom sounds straightforward until one person’s choice affects another. John Stuart Mill argued that society needs strong reasons before interfering with an individual’s liberty. His account still frames arguments about expression, risk, and social pressure.
The difficult work begins when we ask what counts as harm and who gets to define it. A decision may be private in one setting and deeply connected to others in another. Mill does not make those disagreements disappear.
His work invites us to defend room for experimentation while taking consequences seriously. A free society must be able to explain both why it leaves people alone and why, sometimes, it cannot.