On Sacrifice

This great war effort must be carried through to its victorious conclusion by the indomitable will and determination of the people as one great whole.
It must not be impeded by the faint of heart.
It must not be impeded by those who put their own selfish interests above the interests of the nation.
It must not be impeded by those who pervert honest criticism into falsification of fact.
It must not be impeded by self-styled experts either in economics or military problems who know neither true figures nor geography itself.
It must not be impeded by a few bogus patriots who use the sacred freedom of the press to echo the sentiments of the propagandists in Tokyo and Berlin.
And, above all, it shall not be imperiled by the handful of noisy traitors --betrayers of America, (and) betrayers of Christianity itself -- would-be dictators who in their hearts and souls have yielded to Hitlerism and would have this Republic do likewise.
I shall use all of the executive power that I have to carry out the policy laid down. If it becomes necessary to ask for any additional legislation in order to attain our objective of preventing a spiral in the cost of living, I shall do so.

--Franklin Delano Roosevelt
Fireside Chat 21 (April 28, 1942)

It becomes clear that constant reminders for the public are a necessity, because the general public is dumb.