For 10 points, name this subject of John Stuart Mill's most famous essay, which Locke stated went hand-in-hand with life and property.
An essay titled for this idea argues against the suppression of contrary opinion, because it presumes infallibility on the part of the persecutor. One thinker distinguished between the definition of this idea as self-determination in one's government and the definition of it as freedom from coercion or interference. Those are the "positive" and "negative" concepts of this idea. In an essay titled for this idea, one thinker argued that the only justifiable use of power is to prevent people from hurting each other, which is that author's "harm principle." For 10 points, name this subject of John Stuart Mill's most famous essay, which Locke stated went hand-in-hand with life and property.
An essay titled for this idea argues against the suppression of contrary opinion, because it presumes infallibility on the part of the persecutor.
liberty [do not accept or prompt on "freedom"]