A teacher is one who makes himself progressively unnecessary. Thomas Carruthers
Education has produced a vast population able to read but unable to distinguish what is worth reading. G. M. Trevelyan
Education makes a people easy to lead, but difficult to drive; easy to govern, but impossible to enslave. Lord Brougham
The mind is not a vessel to be filled, but a fire to be kindled. Plutarch
The day you stop learning is the day you begin decaying. Isaac Asimov
A little learning is a dangerous thing. Alexander Pope
Perplexity is the beginning of knowledge. Kahlil Gibran
The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge. Daniel J. Boorstin
Doubt grows with knowledge. Johann Wolfgang von Goethe
Believe those who are seeking the truth; doubt those who find it. André Gide
Experience is a hard teacher because she gives the test first, the lesson afterwards. Vernon Law
Experience is the name every one gives to their mistakes. Oscar Wilde
I honestly beleave it iz better tew know nothing than two know what ain’t so. Wisdum don’t konsist in knowing more that iz new, but in knowing less that iz false. Josh Billing (pen name of Henry Wheeler Shaw)
Those who will not reason, are bigots, those who cannot, are fools, and those who dare not, are slaves. Lord Byron
The know-nothings are, unfortunately, seldom the do-nothings. Mignon McLaughlin
The right to be heard does not automatically include the right to be taken seriously. Hubert Humphrey
All human knowledge is uncertain, inexact, and partial. Bertrand Russell
What men really want is not knowledge but certainty. Bertrand Russell
The intelligence of the planet is constant and the population is growing. Arthur C. Clarke
The average PhD thesis is nothing but the transference of bones from one graveyard to another. J. Frank Dobie
Education is the inculcation of the incomprehensible into the indifferent by the incompetent. John Maynard Keynes
I don't know whether the world is full of smart men bluffing or imbeciles who mean it. Morrie Brickman
An optimist is someone who fills up his crossword puzzle in ink . Clement K. Shorter
The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us. Bill Watterson
Some drink deeply from the river of knowledge. Others only gargle. Woody Allen
Wisdom comes from experience. Experience is often a result of lack of wisdom. Terry Pratchett
Most people are fools, most authority is malignant, God does not exist, and everything is wrong. Ted Nelson
We've all heard that a million monkeys banging on a million typewriters will eventually reproduce the entire works of Shakespeare. Now, thanks to the Internet, we know this is not true. Robert Wilensky
“Ford!" he said, "there's an infinite number of monkeys outside who want to talk to us about this script for Hamlet they've worked out.” Douglas Adams, The Hitchhiker's Guide to the Galaxy
To most men, experience is like the stern lights of a ship, which illuminate only the track it has passed. Samuel Taylor Coleridge
If stock market experts were so expert, they would be buying stock, not selling advice. Norman Ralph Augustine
An economist is someone who will know tomorrow why the things he predicted yesterday didn't happen today. Lawrence J. Peter
Nothing is more terrible than ignorance in action. Johann Wolfgang von Goethe
Ignorance, when it is voluntary, is criminal. Samuel Johnson.
Gross ignorance - 144 times worse than ordinary ignorance. Bennett Cerf
To be conscious that you are ignorant of the facts is a great step to knowledge. Benjamin Disraeli
To be ignorant of one's ignorance is the malady of the ignorant. A. Bronson Alcott
The highest form of ignorance is to reject something you know nothing about. Wayne W. Dyer
Ignorance more frequently begets confidence than does knowledge. Charles Darwin
Light travels faster than sound. This is why some people appear bright until they speak. Steven Wright
It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt. Anon (not Mark Twain)
If I have not seen as far as others, it is because giants were standing on my shoulders. Hal Abelson
It's important to be open-minded, but not so open-minded that your brains fall out. Anon.
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. Douglas Adams, Last Chance to See
Think like a man of action, act like a man of thought. Henri Bergson
A great many people think they are thinking when they are merely rearranging their prejudices. William James
Reason is the shepherd trying to corral life's vast flock of wild irrationalities. Paul Eldridge
A great many people mistake opinions for thought. Herbert V. Prochnow
The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd; indeed, in view of the silliness of the majority of mankind, a widespread belief is more likely to be foolish than sensible. Bertrand Russell
Everyone is entitled to his own opinion, but not his own facts. Daniel Patrick Moynihan
The right to be heard does not automatically include the right to be taken seriously. Hubert H. Humphrey
The difficulty lies not so much in developing new ideas as in escaping from old ones. John Maynard Keynes
When the facts change, I change my mind. What do you do, sir? John Maynard Keynes (attrib.)
The first and last thing required of genius is the love of truth. Johann Wolfgang von Goethe
Cultured people are merely the glittering scum which floats upon the deep river of production. Winston Churchill
There is nothing quite so useless, as doing with great efficiency, something that should not be done at all. Peter Drucker