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Astrologers with an old paltry cant and a few pothooks for planets to amuse the vulgar, have too long been suffered to abuse the world. — Jonathan Swift. Man prefers to believe what he prefers to be true. — Francis Bacon.

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Astrologers with an old paltry cant and a few pothooks for planets to amuse the vulgar, have too long been suffered to abuse the world.

— Jonathan Swift

It is not yet clear that intelligence has any long-term survival value.

— Stephen Hawking

If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away.

— Henry David Thoreau

A state of skepticism and suspense may amuse a few inquisitive minds. But the practice of superstition is so congenial to the multitude that, if

they are forcibly awakened, they still regret the loss of their pleasing vision.

— Edward Gibbon

Skepticism is the true

wisdom of man.

— David Hume

There is no harm in doubt and skepticism, for it is through these that new discoveries are made.

— Richard Feynman

The most infallible mark of

ignorance is superstition.

— King Stanislaus


(On creationism) Although I am the last person to advocate laws against blasphemy, surely nothing could be more antireligious than to deny the evidence so clearly written in the rocks for all who have eyes to see!

— Sir Arthur C. Clarke

Our contemplations of the cosmos stir us. There’s a tingling in the spine, a catch in the voice, a faint sensation as of a distant memory of falling from a great height.

We know we are approaching the grandest of mysteries.

— Carl Sagan

The fault, dear Brutus, is not

in the stars, but in ourselves.

— Cassius, from Shakespeare,

“Julius Caesar”

It is wrong always,

everywhere, and

for everyone, to

believe anything

upon insufficient


— W. K. Clifford

Faith consists in believing things because they are impossible.

Faith is nothing more than

submissive or deferential


— Voltaire

A belief in the powers of certain delusive arts such as astrology has greatly retarded the progress of knowledge by engaging the attention of many of the finest geniuses that the world has ever produced.

— O. Gregory

“You’re fine, how am I?”

— One “psychic” greeting the other

“You’re fine, how am I?”

— One “psychic” greeting the other

I think we cannot too strongly attack superstition, which is the disturber of society; nor too highly respect genuine religion, which is the support of it.

— Rousseau

They say that fairies take care of children, drunks, and idiots.

They also say that Richard Nixon

knew nothing about Watergate…

— James Randi

All men are fools, and he who does not wish to see them must remain in his chamber and break his looking-glass.

— Marquis de Sade

A fortune-teller is a pickpocket who is discerning enough to limit his or her depredations to gulls and simpletons.

— Horace Smith

Isn’t a noble, an enlightened way of spending our brief time in the sun, to work at understanding the universe and how we have come to wake up in it?

— Richard Dawkins

It is wrong always, everywhere, and for everyone, to believe anything upon insufficient evidence.

— W. K. Clifford

I contend we are both atheists — I just believe in one fewer god than you do. When you understand why you reject all other gods, you will understand why I reject yours as well.

— Stephen F. Roberts

If a man wants to educate himself,

he must first doubt, for in doubting

he will find the truth.

— Aristotle

Astrology boasts of great antiquity, which has nothing

to do with validity.

— James Randi

Extraordinary claims require

extraordinary evidence.

— Carl Sagan

Equipped with his five senses, man explores the universe around him and calls the adventure science.

— Edwin Powell Hubble,


He who doubts nothing,

knows nothing.

— Nathaniel Appleton

Science is the great antidote to the poison of enthusiasm and superstition.

— Adam Smith

Can that which is the greatest virtue in philosophy – doubt –

be in religion what the priests term it, the greatest of sins?

— Nestelle Bovee

Science is built up with facts,

as a house is with stones. But

a collection of facts is no more

a science than a heap of

stones is a house.

— Jules Henri Poincaré

He who doubts, and yet seeks not to be resolved, is equally unhappy and unjust.

— Pascal

The first point of wisdom is to

discern what is false; the

second, to know what is true.

— Lactantius

Skepticism is the

true wisdom of man.

— David Hume

He is a poor astrologer who pretends by the stars to point

out another’s destiny and yet does not know his own.

— Jaafar

In scientific work, those who refuse to go beyond fact

rarely get as far as fact.

— Thomas Huxley

Astrology, though an ignorant mother, has a very wise daughter — astronomy.

— E. P. Day

Science is organized common sense where many a beautiful theory was killed by an ugly fact.

— Thomas Huxley

It is not what the man of science

believes that distinguishes him, but

how and why he believes it.

— Bertrand Russell

We are trying to prove ourselves

wrong as quickly as possible, because only in that way can we find progress.

— Richard Feynman

Science is intelligence in

action with no holds barred.

— P. W. Bridgman

In making theories, always keep a window open so that you can throw one out if necessary.

— Bela Schick

The real purpose of scientific

method is to make sure Nature

hasn't misled you into thinking you know something you don’t

actually know.

— Robert M. Pirsig

Seek simplicity and distrust it.

— Alfred North Whitehead

The aim of science is not to open the door to everlasting wisdom but to set a limit on everlasting error.

— Bertolt Brecht

In days of old

When knights were bold,

And science not invented,

The Earth was flat

And that was that,

With no man discontented.

— English verse

He who proves things by

experience increases his

knowledge; he who believes

blindly increases his errors.

— Chinese proverb

The pure and simple truth is

rarely pure and never simple.

— Oscar Wilde

The least questioned assumptions

are often the most questionable.

— Paul Broca

Some things have to be

believed to be seen…

— Ralph Hodgson

If superior creatures from

space ever visit Earth, the

first question they will ask

in order to assess the level

of our civilization is: “Have

they discovered evolution

yet?” — Richard Dawkins

Using words to describe magic is like using a screwdriver to cut roast beef.

— Tom Robbins

The path of sound credence

is through the thick forest

of skepticism.

— George Jean Nathan

I honestly believe it is better to know nothing, than to know what ain't so.

— Josh Billings

Be careful about reading

health books. You might

die of a misprint.

— Mark Twain

Truth irritates only those whom it

enlightens but does not convert.

— Pasquier Quesnel

Common sense is

very uncommon.

— Horace Greeley

Every sect, as far as reason

will help them, gladly use it;

but when it fails them they

cry out that this is a matter

of faith, and above reason.

— John Locke

No man really becomes a fool

until he stops asking questions.

— Charles Steinmetz

Judge a man by his questions

rather than by his answers.

— Voltaire

Men become civilized not in proportion to their willingness

to believe, but in proportion

to their willingness to doubt.

— H. L. Mencken

Truth may be expressed without art or affectation, but a lie stands in need of both.

— Nehemiah Grew

He that will not reason is a bigot;

he that cannot reason is a fool;

and he that dares not reason is a slave.

— William Drummond

Superstition, the mother of

those hideous twins, fear

and faith, from her throne

of skulls still rules the world.

— R. G. Ingersoll

No pleasure is comparable to standing upon the vantage-ground of truth.

— Francis Bacon

An angry young student from Reticulum,

Annoyed at their crazy curriculum,

Said, “They teach biorhythms, ,

And a rational π–

I hear Asimov’s set to ridicule ’em!”

— James Randi

There are proselytes

from atheism, but none

from superstition.

— Junius

The greatest burden in the

world is superstition, not only

of ceremonies in the church,

but of imaginary and scarecrow

sins at home.

— Milton

An eclipse of the Sun denotes that

it will be dark while it lasts, that astrologers tell many lies, and that fools believe in magic.

— G. P. Morris

Crystals are pretty rocks; they’re not keys to psychic power nor to healing modalities.

— James Randi

I cannot help thinking, as we approach the year 2000, that

the time is ripe to establish an “End – of – the – World – of –

the – Month – Club.”

— Sir Arthur C. Clarke

When Man seized the lodestone

of science, the lodestone of

superstition vanished in the clouds.

— W. R. Alger

It is indeed a national tragedy that millions of children have been prevented from appreciating the awesome scale – in time as well

as space – of our wonderful universe owing to the cowardice of politicians and school boards.

— Sir Arthur C. Clarke