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

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

A person is never happy except at the price of some ignorance.

A person is never happy except at the price of some ignorance.

It takes a lot of things to prove you are smart, but only one thing to prove you are ignorant.

It takes a lot of things to prove you are smart, but only one thing to prove you are ignorant.

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.

Ignorance is never out of style. It was in fashion yesterday, it is the rage today and it will set read more

Ignorance is never out of style. It was in fashion yesterday, it is the rage today and it will set the pace tomorrow.

Ignorance and inconsideration are the two great causes of the ruin of mankind

Ignorance and inconsideration are the two great causes of the ruin of mankind

If I don't have wisdom, I can teach you only ignorance.

If I don't have wisdom, I can teach you only ignorance.

I am not ashamed to confess I am ignorant of what I do not know

I am not ashamed to confess I am ignorant of what I do not know

Ignorance gives one a large range of probabilities.

Ignorance gives one a large range of probabilities.