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

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

By ignorance we mistake, and by mistakes we learn

By ignorance we mistake, and by mistakes we learn

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

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

One of the keys to happiness is a bad memory.

One of the keys to happiness is a bad memory.

It is not ignorance but knowledge which is the mother of wonder.

It is not ignorance but knowledge which is the mother of wonder.

I do not pretend to know where many ignorant men are sure -- that is all that agnosticism means.

I do not pretend to know where many ignorant men are sure -- that is all that agnosticism means.

Never let your persistence and passion turn into stubbornness and ignorance.

Never let your persistence and passion turn into stubbornness and 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.]

There are many things of which a wise man might wish to be ignorant

There are many things of which a wise man might wish to be ignorant