“Civilization gets its first flower from the rebel.”
Source: Power and Innocence (1972), Ch. 11 : The Humanity of the Rebel
Context: The function of the rebel is to shake the fixated mores of the rigid order of civilization; and this shaking, though painful, is necessary if the society is to be saved from boredom and apathy. Obviously I do not refer to everyone who calls himself a rebel, but only to the authentic rebel. Civilization gets its first flower from the rebel.
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Rollo May 135
US psychiatrist 1909–1994Related quotes
Cooper in Jeff Cooper’s Commentaries October 2003, Vol. 11, No. 12.

http://findarticles.com/p/articles/mi_m0GER/is_2000_Summer/ai_63500762

Letter to M. K.
The Road to Revolution (2008)

Source: Adolescence: Guiding Youth Through the Perilous Ordeal, p. 67

“Kings will be tyrants from policy, when subjects are rebels from principle.”
Volume iii, p. 334
Source: Reflections on the Revolution in France (1790)