By ignorance we mistake, and by mistakes we learn

By ignorance we mistake, and by mistakes we learn

Ignorance is not innocence but sin.

Ignorance is not innocence but sin.

One of the keys to happiness is a bad memory.

One of the keys to happiness is a bad memory.

Discussion is an exchange of knowledge; argument is an exchange of ignorance

Discussion is an exchange of knowledge; argument is an exchange of ignorance

When ignorance gets started it knows no bounds

When ignorance gets started it knows no bounds

If ignorance is bliss, there should be more happy people.

If ignorance is bliss, there should be more happy people.

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.

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 only good is knowledge and the only evil is ignorance.

The only good is knowledge and the only evil is ignorance.