[...]cases the limitations affect the conduct of every one, restrictions on freedom of opinion affect only the comparatively small number who have any opinions, revolutionary or unconventional, to express. The truth is that valid argument can be founded on the conception of natural rights, because it involves an untenable theory of the relations between society and its members. On the other hand, those who have the responsibility of governing a society can argue that it is as incumbent on them to prohibit the circulation of pernicious opinions as to prohibit any anti-social actions. They can argue that a[...].