Aristotle -

 Masculine republics give way to feminine democracies, and feminine democracies give way to tyranny.

Kevin Baker -

 If Right-wing extremists were as dangerous as they think, there wouldn't BE any Left-wing extremists.

Thomas Sowell -

 Activism is a way for useless people to feel important, even if the consequences of their activism are counterproductive for those they claim to be helping and damaging to the fabric of society as a whole.

Edward Bernays -

No serious sociologist any longer believes that the voice of the people expresses any divine or specially wise and lofty idea. The voice of the people expresses the mind of the people, and that mind is made up for it by the group leaders in whom it believes and by those persons who understand the manipulation of public opinion. It is composed of inherited prejudices and symbols and clichés and verbal formulas supplied to them by the leaders.

Glenn Reynolds -

...in the end the police aren’t there to protect the public from criminals, they’re there to protect criminals from the public. Communities dealt with crime long before police were invented, usually in rather harsh and low-due-process ways. The bargain was, let the police handle it instead. No police, no bargain.

Freeman Dyson -

A model is such a fascinating toy that you fall in love with your creation... Every model has to be compared to the real world and, if you can't do that, then don't believe the model.

Robert Heinlein -

What are the facts? Again and again and again – what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history” – what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!

Joseph Goebbels -

Not every item of news should be published. Rather must those who control news policies endeavor to make every item of news serve a certain purpose.