Jeff Cooper Quotes
Anger, as long as it is controlled anger, is no obstacle to efficiency. Self-control is one thing the sociopath does not usually possess. Use yours to his undoing.
Citations
Cooper, Jeff. Principles of Personal Defense. Paladin Press, 1989, p. 24.
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John Dean "Jeff" Cooper was a United States Marine, the creator of the "modern technique" of handgun shooting, and an expert on the use and history of small arms.