Having gradually (and perhaps painfully) accumulated information to support a decision people become progressively loath to accept contrary evidence.
Norman F. Dixon (1922-2013) British cognitive psychologist, author, military engineer
On the Psychology of Military Incompetence, Part 1, ch. 2 “Generalship” (1976)
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I wish to preach, not the doctrine of ignoble ease, but the doctrine of the strenuous life. The life of toil and effort, of labor and strife; to preach that highest form of success which comes, not to the man who desires mere easy peace, but to the man who does not shrink from danger, from hardship or from bitter toil, and who out of these wins the splendid ultimate triumph.
Theodore Roosevelt (1858–1919) American politician, statesman, conservationist, writer, US President (1901–1909)
Speech (1899-04-10), “The Strenuous Life,” Hamilton Club, Chicago
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