"The strongest of all arguments against the present constitution of society is, that it does not permit the free development of every individual."

"The 'self-regarding' actions are those which primarily and directly affect only the agent himself."

"The worth of a State, in the long run, is the worth of the individuals composing it."

"A person should be free to do as he likes in his own concerns; but he ought not to be free to do as he likes in acting for other people, under the pretext that the affairs of other people are his own …"

"The peculiar evil of silencing the expression of an opinion is, that it is robbing the human race; posterity as well as the existing generation; those who dissent from the opinion, still more than tho…"