I do not suggest that you should not have an open mind, particularly as you
approach college. But don't keep your mind so open that your brains fall out.
~ William John Bennett, Gonzaga College High School, Washington DC (1987).
It is better to know nothing than to know what ain't so.
Josh Billings
You cannot build an informed democracy out of people who will believe in little
green men from Venus. Credulity — willingness to accept unsupported statements
without demanding proof — is the greatest ally of the dictator and the
demagogue.
Arthur C. Clarke, Voices from the Sky:
A Preview of the Coming Space Age (1974)
"The Lunatic Fringe" An open mind is all very well in its way, but it ought not to be so open
that there is no keeping anything in or out of it. It should be capable of
shutting its doors sometimes, or may be found a little draughty. -- Samuel
Butler
Merely having an open mind is nothing. The object of opening the mind, as of
opening the mouth, is to shut it again on something solid. -- G.K. Chesterton
An open mind, like and open window, should be screened to keep the bugs out.
-- Virginia Hutchinson
An open mind may be compared to a parachute, where it works best when open,
but recognize that it that is certainly not the case if one is in a
thunderstorm being thrown about by the updrafts. If you keep your mind
sufficiently open, people will throw a lot of rubbish into it. -- William A.
Orton, Everyman Amid the Stereotype
The trouble with having an open mind, of course, is that people will insist
on coming along and trying to put things in it.- Terry Pratchett
If anyone can show me, and prove to me, that I am wrong in thought or deed, I
will gladly change. I seek the truth, which never yet hurt anybody. It is only
persistence in self-delusion and ignorance which does harm.
Marcus Aurelius
Man prefers to believe what he prefers to be true.
Francis Bacon, Novum Organon (1620)
Broun said of one fence-straddling radio commentator, "His mind is so open that
the wind whistles through it."
Heywood Broun, quoted in Robert E. Drennan (ed.),
The Algonquin Wits (1985)
Cursed is he that does not know when to shut his mind. An open mind is all very
well in its way, but it ought not to be so open that there is no keeping
anything in or out of it. It should be capable of shutting its doors sometimes,
or may be found a little draughty.
Samuel Butler
A credulous mind . . . finds most delight in believing strange things, and the
stranger they are the easier they pass with him; but never regards those that
are plain and feasible, for every man can believe such.
Samuel Butler, Characters (1667-1669)
A person can function "normally" in a million and one ways and hold the most
irrational beliefs imaginable, as long as the irrational beliefs are culturally
accepted delusions.
Robert Todd Carroll, The Skeptic's Dictionary (
http://skepdic.com/),
"Alien Abductions"
. . . if I let myself believe anything on insufficient evidence, there may be no
great harm done by the mere belief; it may be true after all, or I may never
have occasion to exhibit it in outward acts. But I cannot help doing this great
wrong towards Man, that I make myself credulous. The danger to society is not
merely that it should believe wrong things, though that is great enough; but
that it should become credulous, and lose the habit of testing things and
inquiring into them; for then it must sink back into savagery.
William Kingdon Clifford, "The Ethics of Belief"
It is wrong always, everywhere and for everyone to believe anything upon
insufficient evidence.
William Kingdon Clifford, "The Ethics of Belief"
By all means let's be open-minded, but not so open-minded that our brains drop
out.
Richard Dawkins, "Science, Delusion and the Appetite for Wonder"
(Richard Dimbleby Lecture, BBC1, November 12th, 1996)
Man's most valuable trait is a judicious sense of what not to believe.
Euripides, Helen (412 B.C.)
So, in short, you can't prove anything by one occurrence, or two occurrences,
and so on. Everything has to be checked out very carefully. Otherwise you
become one of these people who believe all kinds of crazy stuff and doesn't
understand the world they're in. Nobody understand the world they're in, but
some people are better off at it than others.
Richard Feynman, The Meaning of It All: Thoughts
of a Citizen Scientist (1963; published 1998)
wise man proportions his belief to the evidence.
David Hume
It is always better to have no ideas than false ones; to believe nothing than to
believe what is wrong.
Thomas Jefferson
The invisible and nonexistent look much alike.
Delos B. McKown
It's hard to strike a balance between keeping an open mind and being a sucker.
Spider Robinson, Lady Slings the Booze (1992)
It is the things for which there is no evidence that are believed with passion.
Bertrand Russell
Man is a credulous animal, and must believe something; in the absence of good
grounds for belief, he will be satisfied with bad ones.
Bertrand Russell, Unpopular Essays (1950)
"An Outline of Intellectual Rubbish"
... skeptical scrutiny is the means, in both science and religion, by which deep
insights can he winnowed from deep nonsense. ... The well-meaning contention
that all ideas have equal merit seems to me little different from the
disastrous contention that no ideas have any merit.
Carl Sagan, Broca's Brain: Reflections on the Romance of Science (1979)
"Introduction"
Keeping an open mind is a virtue — but, as the space engineer James Oberg once
said, not so open that your brains fall out. Of course we must be willing to
change our minds when warranted by new evidence. But the evidence must be
strong. Not all claims to knowledge have equal merit.
Carl Sagan, The Demon-Haunted World:
Science As A Candle in the Dark (1995)
People not only jump to conclusions, they frequently rationalize or defend
whatever conclusion they jump to. ... It is not surprising that rats, pigeons,
and small children are often better at solving these sorts of problems than are
human adults. Pigeons and small children don't care so much whether they are
always right, and they do not have such a developed capacity for convincing
themselves they are right, no matter what the evidence is.
Theodore Schick, Jr. & Lewis Vaughn, How to Think About
Weird Things: Critical Thinking for a New Age (1995)
We can't make something true simply by believing it to be true If we could, the
world would contain a lot fewer unfulfilled desires, unrealized ambitions, and
unsuccessful projects than it does.
Theodore Schick, Jr. & Lewis Vaughn, How to Think About
Weird Things: Critical Thinking for a New Age (1995)
We have good reasons to doubt a proposition when it conflicts with other
propositions we have good reasons to believe, when it conflicts with
well-established background information, or when it conflicts with expert
opinion regarding the evidence. If we have good reason to doubt a proposition,
we can't know it. The best we can do is proportion our belief to the evidence.
Theodore Schick, Jr. & Lewis Vaughn, How to Think About
Weird Things: Critical Thinking for a New Age (1995)
There is nothing more impressive than a miracle, except the credulity that can
take it at par.
Mark Twain, Notebook, 1904
Any belief worth having must survive doubt.
Unknown
As long as people believe in absurdities they will continue to commit
atrocities.
Voltaire
The value of an idea has nothing whatsoever to do with the sincerity of the man
who expresses it.
Oscar Wilde
... completely open minds may turn out to be completely empty.
Lewis Wolpert, The Unnatural Nature of Science (1993)
All of the books in the world contain no more information than is broadcast as
video in a single large American city in a single year. Not all bits have equal
value.
Carl Sagan
But the fact that some geniuses were laughed at does not imply that all who are
laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they
laughed at the Wright Brothers. But they also laughed at Bozo the Clown.
Carl Sagan
For me, it is far better to grasp the Universe as it really is than to persist
in delusion, however satisfying and reassuring.
Carl Sagan
I am often amazed at how much more capability and enthusiasm for science there
is among elementary school youngsters than among college students.
Carl Sagan
I can find in my undergraduate classes, bright students who do not know that the
stars rise and set at night, or even that the Sun is a star.
Carl Sagan
I worry that, especially as the Millennium edges nearer, pseudo-science and
superstition will seem year by year more tempting, the siren song of unreason
more sonorous and attractive.
Carl Sagan
If we long to believe that the stars rise and set for us, that we are the reason
there is a Universe, does science do us a disservice in deflating our conceits?
Carl Sagan
Our species needs, and deserves, a citizenry with minds wide awake and a basic
understanding of how the world works.
Carl Sagan
There are many hypotheses in science which are wrong. That's perfectly all
right; they're the aperture to finding out what's right. Science is a
self-correcting process. To be accepted, new ideas must survive the most
rigorous standards of evidence and scrutiny.
Carl Sagan
We live in a society exquisitely dependent on science and technology, in which
hardly anyone knows anything about science and technology.
Carl Sagan
Humanity has the stars in its future, and that future is too important to be
lost under the burden of juvenile folly and ignorant superstition.
Isaac Asimov
Poets say science takes away from the beauty of the stars - mere globs of gas
atoms. I, too, can see the stars on a desert night, and feel them. But do I see
less or more?
Richard P. Feynman
Reality must take precedence over public relations, for nature cannot be fooled.
Richard P. Feynman
The first principle is that you must not fool yourself and you are the easiest
person to fool.
Richard P. Feynman