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

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

The only thing more expensive than education is ignorance.

The only thing more expensive than education is ignorance.

The tax which will be paid for the purpose of education is not more than the thousandth part of what read more

The tax which will be paid for the purpose of education is not more than the thousandth part of what will be paid to kings, priests and nobles who will rise up among us if we leave the people in ignorance

There is no reply to the ignorant like keeping silence

There is no reply to the ignorant like keeping silence

Who ne'er knew salt, or heard the billows roar.

Who ne'er knew salt, or heard the billows roar.

The recipe for perpetual ignorance is: Be satisfied with your opinions and content with your knowledge.

The recipe for perpetual ignorance is: Be satisfied with your opinions and content with your knowledge.

The evil that is in the world almost always comes of ignorance, and good intentions may do as much harm read more

The evil that is in the world almost always comes of ignorance, and good intentions may do as much harm as malevolence if they lack understanding.

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

For "ignorance is the mother of devotion," as all the world
knows.

For "ignorance is the mother of devotion," as all the world
knows.