Free speech is not to be regulated like diseased cattle and impure butter. The audience that hissed yesterday may applaud today, even for the same performance.
William O. Douglas
[A similar thing can be said of guns. The type of gun that was used for a terrible crime yesterday may be used to save many lives the next. The government that protects you one day may next year send you to the gulags–unless you and your kind own and know how to use guns.–Joe]