On Liberty by John Stuart Mill is a powerful and enduring philosophical essay that explores the nature and boundaries of individual freedom in society. Written in 1859 during a period of political and intellectual upheaval, Mill makes an impassioned case for the sanctity of personal liberty—arguing that individuals should be free to act, think, and express themselves as they choose, so long as they do not harm others.

Mill's central thesis, often referred to as the "harm principle," remains one of the cornerstones of liberal political thought: that the only justification for societal or governmental interference in a person's life is to prevent harm to others. With remarkable clarity, he examines the relationship between authority and autonomy, tackling issues like free speech, individuality, moral policing, and the role of dissent in democratic society.

Narrated with depth and thoughtfulness by Luke Oldham, this audiobook brings to life one of the most influential works in political philosophy—a timeless defense of freedom and a clarion call for the courage to think for oneself.