Every mind was made for growth, for knowledge; and its nature is sinned against when it is doomed to ignorance.

- William Ellery Channing

Knowledge is no guarantee of good behavior, but ignorance is a virtual guarantee of bad behavior,

- Martha Nussbaum

Of all the wastes of human ignorance perhaps the most extravagant and costly to human growth has been the waste of the distinctive powers of womanhood after the child-bearing age.

- Anna Garlin Spencer

I seem to have been like a child playing on the seashore, finding new and then a prettier shell than ordinary, whilst the great ocean of truth lay undiscovered before me.

- Isaac Newton

Opinions are formed in a process of open discussion and public debate, and where no opportunity for the forming of opinions exists, there may be moods -- moods of the masses and moods of individuals, the latter no less fickle and unreliable than the former -- but no opinion.

- Hannah Arendt

What's encouraging about meditation is that even if we shut down, we can no longer shut down in ignorance. We see very clearly that we're closing off. That in itself begins to illuminate the darkness of ignorance.

- Pema Chodron

If you once forfeit the confidence of your fellow citizens, you can never regain their respect and esteem. It is true that you may fool all of the people some of the time; you can even fool some of the people all of the time; but you can't fool all of the people all of the time.

- Abraham Lincoln

You always admire what you really don't understand.

- Blaise Pascal

To be ignorant of one's ignorance is the malady of the ignorant.

- Amos Bronson Alcott

Is it ignorance or apathy? Hey, I don't know and I don't care.

- Jimmy Buffett

A man is wise with the wisdom of his time only, and ignorant with its ignorance.

- Henry David Thoreau

Ignorance is preferable to error, and he is less remote from the truth who believes nothing than he who believes what is wrong.

- Thomas Jefferson

Disillusion comes only to the illusioned. One cannot be disillusioned of what one never put faith in.

- Dorothy Thompson

A little learning is a dangerous thing; drink deep, or taste not the Pierian spring: there shallow draughts intoxicate the brain, and drinking largely sobers us again.

probably the source of the saying, "a little knowledge is a dangerous thing"

- Alexander Pope

I believe that ignorance is the root of all evil. And that no one knows the truth.

- Molly Ivins

Education is learning what you didn't even know you didn't know.

- Daniel J. Boorstin

Nothing in education is so astonishing as the amount of ignorance it accumulates in the form of inert facts.

- Henry Brooks Adams

Education is a progressive discovery of our own ignorance.

- Will Durant

Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.

- Albert Einstein

There is a time in every man's education when he arrives at the conviction that envy is ignorance; that imitation is suicide; that he must take himself for better for worse as his portion . . . It is the harder because you will always find those who think they know what is your duty better than you know it. It is easy in the world to live after the world's opinion; it is easy in solitude to live after our own; but the great man is he who in the midst of the crowd keeps with perfect sweetness the independence of solitude.

- Ralph Waldo Emerson

Blessed is the man who, having nothing to stay, abstains from giving us worthy evidence of the fact.

- George Eliot

The greatest obstacle to discovery is not ignorance -- it is the illusion of knowledge.

- Daniel J. Boorstin

If the King's English was good enough for Jesus, it's good enough for me!

Governor of Texas (circa 1920)

- Ma Ferguson

Three minutes thought would suffice to find this out; but thought is irksome and three minutes is a long time.

- A. E. Housman

Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.

- Martin Luther King, Jr.

An age is called Dark, not because the light fails to shine, but because people refuse to see it.

- James Michener

I didn't know Onward Christian Soldiers was a Christian song.

at a non-denominational mayor's breakfast, Fort Worth, Texas

- Aggie Pate

A great many people mistake opinions for thoughts.

- Herbert V. Prochnow

The word "genius" isn't applicable in football. A genius is a guy like Norman Einstein.

NFL football quarterback and sports analyst

- Joe Theisman

If the blind lead the blind, both shall fall into the ditch. Matthew 15:14

- Bible

Where justice is denied, where poverty is enforced, where ignorance prevails, and where any one class is made to feel that society is an organized conspiracy to oppress, rob and degrade them, neither persons nor property will be safe.

- Frederick Douglass

True friendship can afford true knowledge. It does not depend on darkness and ignorance.

- Henry David Thoreau

A long habit of not thinking a thing wrong gives it a superficial appearance of being right.

- Thomas Paine