"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."

"War is an ugly thing, but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war, is much worse."

"Eccentricity has always abounded when and where strength of character has abounded; and the amount of eccentricity in a society has generally been proportional to the amount of genius, mental vigour, …"

"The government of a country, by a part of the people, is, for all purposes of good government, an equally objectionable form of government with that of a single despot."

"The peculiar evil of silencing the expression of an opinion is, that it is robbing the human race."