“Dictators must have enemies. They must have internal enemies to justify their secret police and external enemies to justify their military forces.”
2005 February 17 - In a debate with DNC Chairman Howard Dean at Pacific University
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Richard Perle 11
American government official 1941Related quotes

Original French: Il faut étouffer les ennemis intérieurs et extérieurs de la République, ou périr avec elle ; or, dans cette situation, la première maxime de votre politique doit être qu’on conduit le peuple par la raison, et les ennemis du peuple par la terreur.
Speech to the National Convention (5 February 1794)
“Conflict defines nations. Enemies justify armies. Wars glorify generals.”
Ch 7
The Rahotep series, Book 3: Egypt: The Book of Chaos (2011)
Context: Conflict defines nations. Enemies justify armies. Wars glorify generals. Without his great enemy to give him purpose and meaning, he will be significantly diminished. He will have to come to terms with us.

Jasper Ridley, Tito: A Biography (Constable and Company Ltd., 1994), p. 323.
Other

“The followers must feel humiliated by the ostentatious wealth and force of their enemies.”
Ur-Fascism (1995)
Context: The followers must feel humiliated by the ostentatious wealth and force of their enemies. When I was a boy I was taught to think of Englishmen as the five-meal people. They ate more frequently than the poor but sober Italians. Jews are rich and help each other through a secret web of mutual assistance. However, the followers must be convinced that they can overwhelm the enemies. Thus, by a continuous shifting of rhetorical focus, the enemies are at the same time too strong and too weak.

As quoted in “For Utopia, Curb State Controls”, Peggy Baker, Ames Daily Tribune (Ames, Iowa), January 23, 1970

“To know your Enemy, you must become your Enemy.”
This is sometimes attributed to Sun Tzu in combination with the above quote, as well as alone, but it too has not been sourced to any published translation of The Art of War, though it is similar in concept to his famous statement in Ch. 3 : "It is said that if you know your enemies and know yourself, you will not be imperiled in a hundred battles..."
Misattributed