Real knowledge is to know the extent of one's ignorance.

Real knowledge is to know the extent of one's ignorance.

I have never met a man so ignorant that I couldn't learn something from him.

I have never met a man so ignorant that I couldn't learn something from him.

I do not believe in the collective wisdom of individual ignorance.

I do not believe in the collective wisdom of individual ignorance.

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

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

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.

Hide our ignorance as we will, an evening of wine soon reveals it.

Hide our ignorance as we will, an evening of wine soon reveals it.

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

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

There is only one evil: ignorance.

There is only one evil: ignorance.

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