But so long as men are not trained to withhold judgment in the absence of evidence, they will be led astray by cocksure prophets, and it is likely that their leaders will be either ignorant fanatics or dishonest charlatans. To endure uncertainty is difficult, but so are most of the other virtues. For the learning of every virtue there is an appropriate discipline, and for the learning of suspended judgment the best discipline is philosophy.
Bertrand Russell (1872-1970) English mathematician and philosopher
“Philosophy for Laymen,” Universities Quarterly (1946-11)
(Source)
Reprinted in Unpopular Essays, ch. 2 (1951).
Quotations about:
gullibility
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A mixture of gullibility and cynicism had been an outstanding characteristic of mob mentality before it became an everyday phenomenon of masses. In an ever-changing, incomprehensible, world the masses had reached the point where they would, at the same time, believe everything and nothing, think that everything is possible and that nothing was true. The mixture in itself was remarkable enough, because it spelled the end of the illusion that gullibility was a weakness of unsuspecting primitive souls and cynicism the vice of superior and refined minds.
Hannah Arendt (1906-1975) German-American philosopher, political theorist
The Origins of Totalitarianism, Part 3, ch. 11 “The Totalitarian Movement,” sec. 2 (1951)
(Source)
Call me a “rube” and a “hick,” but I’d a lot rather be the man who bought the Brooklyn Bridge than the man who sold it.
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)
(Source)
It seems to me what is called for is an exquisite balance between two conflicting needs: the most skeptical scrutiny of all hypotheses that are served up to us and at the same time a great openness to new ideas. Obviously those two modes of thought are in some tension. But if you are able to exercise only one of these modes, whichever one it is, you’re in deep trouble.
If you are only skeptical, then no new ideas make it through to you. You never learn anything new. You become a crotchety old person convinced that nonsense is ruling the world. (There is, of course, much data to support you.) But every now and then, maybe once in a hundred cases, a new idea turns out to be on the mark, valid and wonderful. If you are too much in the habit of being skeptical about everything, you are going to miss or resent it, and either way you will be standing in the way of understanding and progress.
On the other hand, if you are open to the point of gullibility and have not an ounce of skeptical sense in you, then you cannot distinguish useful ideas from the worthless ones. If all ideas have equal validity then you are lost, because then, it seems to me, no ideas have any validity at all.
Carl Sagan (1934-1996) American scientist and writer
“The Burden of Skepticism,” Pasadena lecture (1987)
(Source)
Reprinted in The Skeptical Inquirer (Fall 1987).