But let a man know that there are things to be known, of which he
is ignorant, and it read more

But let a man know that there are things to be known, of which he
is ignorant, and it is so much carved out of his domain of
universal knowledge.

One of the keys to happiness is a bad memory.

One of the keys to happiness is a bad memory.

Through ignorance of what is good and what is bad, the life of
men is greatly perplexed.
[Lat., read more

Through ignorance of what is good and what is bad, the life of
men is greatly perplexed.
[Lat., Ignoratione rerum bonarum et malarum maxime hominum vita
vexatur.]

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

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.

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.

There is only one evil: ignorance.

There is only one evil: ignorance.

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

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

The doorstep to the temple of wisdom is a knowledge of our own ignorance.

The doorstep to the temple of wisdom is a knowledge of our own ignorance.