Man, once surrendering his reason, has no remaining guard against absurdities the most monstrous, and like a ship without rudder is the sport of every wind. With such persons gullability which they call faith takes the helm from the hand of reason and the mind becomes a wreck.
Thomas Jefferson (1743-1826) American political philosopher, polymath, statesman, US President (1801-09)
Letter to James Smith (8 Dec 1822)
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Quotations about:
unreason
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Treat bad men exactly as if they were insane. They are in-sane, out of health, morally. Reason, which is food to sound minds, is not tolerated, still less assimilated, unless administered with the greatest caution; perhaps, not at all. Avoid collision with them, so far as you honorably can; keep your temper, if you can, — for one angry man is as good as another; restrain them from violence, promptly, completely, and with the least possible injury, just as in the case of maniacs, — and when you have got rid of them, or got them tied hand and foot so that they can do no mischief, sit down and contemplate them charitably, remembering that nine tenths of their perversity comes from outside influences, drunken ancestors, abuse in childhood, bad company, from which you have happily been preserved, and for some of which you, as a member of society, may be fractionally responsible.
Oliver Wendell Holmes, Sr. (1809-1894) American poet, essayist, scholar
Elsie Venner, ch. 16 [The Professor] (1859)
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Unreason and anti-intellectualism abominate thought. Thinking implies disagreement; and disagreement implies nonconformity; and nonconformity implies heresy; and heresy implies disloyalty — so, obviously, thinking must be stopped. But shouting is not a substitute for thinking and reason is not the subversion but the salvation of freedom.
Adlai Stevenson (1900-1965) American diplomat, statesman
Call to Greatness, ch. 3 “America’s Burden” (1954)
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Adapted from his "A Troubled World," Godkin Lectures, Harvard University (1954-03-17 - 1954-03-20)
To argue with a man who has renounced the use and authority of reason, and whose philosophy consists in holding humanity in contempt, is like administering medicine to the dead, or endeavoring to convert an Atheist by scripture.
Thomas Paine (1737-1809) American political philosopher and writer
The American Crisis #5, “To General Sir William Howe” (23 Mar 1778)
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Sometimes shortened as: "To argue with a man who has renounced his reason is like giving medicine to the dead."