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

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

Ignorance is the dominion of absurdity.

Ignorance is the dominion of absurdity.

Gross ignorance is 144 times worse than ordinary ignorance.

Gross ignorance is 144 times worse than ordinary ignorance.

Prejudice is the child of ignorance.

Prejudice is the child of ignorance.

I do not pretend to know where many ignorant men are sure -- that is all that agnosticism means.

I do not pretend to know where many ignorant men are sure -- that is all that agnosticism means.

There is nothing more frightful than an active ignorance.
[Ger., Es ist nichts schrecklicher als eine thatige
Unwissenheit.]

There is nothing more frightful than an active ignorance.
[Ger., Es ist nichts schrecklicher als eine thatige
Unwissenheit.]

Mr. Kremlin himself was distinguished for ignorance, for he had
only one idea, and that was wrong.

Mr. Kremlin himself was distinguished for ignorance, for he had
only one idea, and that was wrong.

Discussion is an exchange of knowledge; an argument an exchange of ignorance.

Discussion is an exchange of knowledge; an argument an exchange of ignorance.

Be ignorance thy choice, where knowledge leads to woe.

Be ignorance thy choice, where knowledge leads to woe.