John Stuart Mill — "The only security against total error is discussion."

"The ultimate end, with reference to and for the sake of which all other things are desirable (whether we are considering our own good or that of other people), is an existence exempt as far as possibl…"

"The sole end for which mankind are warranted, individually or collectively, in interfering with the liberty of action of any of their number, is self-protection."

"The human faculties of perception, judgment, discriminative feeling, mental activity, and even moral preference, are exercised only in making a choice."

"The subjection of women is a standing disgrace to Europe."

"The only part of the conduct of any one, for which he is amenable to society, is that which concerns others."