It does not require a majority to prevail, but rather an irate, tireless minority keen to set brush fires in the minds of men.

Misattributed to Samuel Adams as early as 1990. Also misattributed to John Adams. Actually originates with Diane Ackerman, who, in an article on Samuel Adams, "The Man Who Made a Revolution", published in the September 6, 1987 issue of the widely circulated Sunday newspaper supplement Parade, wrote: "Early on, he realized that revolutions don't require a majority to prevail, but rather an irate, tireless minority keen to set brushfires in people's minds." (page numbers vary, article on pp. 20–23 in most editions with the preceding quote on p. 22)