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

He must be very ignorant for he answers every question he is asked

He must be very ignorant for he answers every question he is asked

The learned man knows that he is ignorant.

The learned man knows that he is ignorant.

His ignorance is encyclopedic.

His ignorance is encyclopedic.

There is no reply to the ignorant like keeping silence

There is no reply to the ignorant like keeping silence

The only thing more expensive than education is ignorance.

The only thing more expensive than education is ignorance.

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.]

I am not ashamed to confess that I am ignorant of what I do not
know.
[Lat., Non read more

I am not ashamed to confess that I am ignorant of what I do not
know.
[Lat., Non me pudet fateri nescire quod nesciam.]

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.