Have the courage to have your wisdom regarded as stupidity.

I envy stupidity, stupidity is eternal.

"Your stupidity is appalling!"
"Most stupidity is!"

Translation: Nothing conveys the feeling of infinity as much as stupidity does.

A word to the wise is infuriating.

Stupidity was as necessary as intelligence, and as difficult to attain.

The distrust of wit is the beginning of tyranny.

If there is one thing I can't stand, it is stupidity. I always say that stupidity is the Sin against the Holy Ghost.

There are so many different kinds of stupidity, and cleverness is one of the worst.

Too much respect for other people's wisdom will make you depreciate your own.

Obstinacy and vehemency in opinion are the surest proofs of stupidity.

How terrible is wisdom when it brings no profit to the wise.

Wisdom must yield to superstition's rules,
Who arms with bigot zeal the hand of fools.

Nothing will a man rue more than refusal to listen to the wise.