“I do not consider it an insult, but rather a compliment to be called an agnostic. I do not pretend to know where many ignorant men are sure — that is all that agnosticism means.”

“She was heartily ashamed of her ignorance – a misplaced shame. Where people wish to attach, they should always be ignorant. To come with a well−informed mind is to come with an inability of administering to the vanity of others, which a sensible person would always wish to avoid. A woman especially, if she have the misfortune of knowing anything, should conceal it as well as she can.”

“Nothing is so firmly believed as that which we least know.”

“Religion, n. A daughter of Hope and Fear, explaining to Ignorance the nature of the Unknowable.”

“To know that you do not know is the best.To think you know when you do not is a disease.Recognizing this disease as a disease is to be free of it.”

“Ignorance more frequently begets confidence than does knowledge: it is those who know little, not those who know much, who so positively assert that this or that problem will never be solved by science.”

“The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.”

“It would be the height of absurdity to label ignorance tempered by humility “faith”!(Institutio III.2.3)”

“Imagine the people who believe such things and who are not ashamed to ignore, totally, all the patient findings of thinking minds through all the centuries since the Bible was written. And it is these ignorant people, the most uneducated, the most unimaginative, the most unthinking among us, who would make themselves the guides and leaders of us all; who would force their feeble and childish beliefs on us; who would invade our schools and libraries and homes. I personally resent it bitterly.”

“Give me the storm and tempest of thought and action, rather than the dead calm of ignorance and faith! Banish me from Eden when you will; but first let me eat of the fruit of the tree of knowledge!”

“The moment you start arguing with an ignorant fool, you have already lost.”

“May it [American independence] be to the world, what I believe it will be, (to some parts sooner, to others later, but finally to all,) the signal of arousing men to burst the chains under which monkish ignorance and superstition had persuaded them to bind themselves, and to assume the blessings and security of self-government. That form which we have substituted, restores the free right to the unbounded exercise of reason and freedom of opinion. All eyes are opened, or opening, to the rights of man. The general spread of the light of science has already laid open to every view the palpable truth, that the mass of mankind has not been born with saddles on their backs, nor a favored few booted and spurred, ready to ride them legitimately… These are grounds of hope for others. For ourselves, let the annual return of this day forever refresh our recollections of these rights, and an undiminished devotion to them.[Letter to Roger C. Weightman on the anniversary of the signing of the Declaration of Independence in 1776, 24 June 1826. This was Jefferson’s last letter]”

“Là où règne l’ignorance, règne aussi la misère.”

“Ignorance is bliss’ only if you’re ignorant enough to believe that that’s where bliss comes from.”

“Why am I always lost in the woods,” I yell at the top of my voice! And if I choose to settle down for a moment and be honest with myself, I’ll rather reluctantly admit that I drew the map.”