Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity.

Stupidity talks, vanity acts.

Genius may have its limitations, but stupidity is not thus handicapped.

Stupidity often saves a man from going mad.

Humanitarianism is the expression of stupidity and cowardice.

Never underestimate the power of human stupidity.

An inability to handle language is not the same thing as stupidity.

I stood up as best I could to their disgusting stupidity and brutality, but I did not, of course, manage to beat them at their own game. It was a fight to the bitter end, one in which I was not defending ideals or beliefs but simply my own self.

You even called me stupid in your verse, and I'm almost agreeing, for where stupidity is involved, you are quite an expert, friend.

Libraries keep the records on behalf of all humanity. the unique and the absurd, the wise and the fragments of stupidity.

Man has made use of his intelligence, he invented stupidity.

Man is the inventor of stupidity.

We are bound to lose Ireland in consequence of years of cruelty, stupidity and misgovernment and I would rather lose her as a friend than as a foe.

It is because nations tend towards stupidity and baseness that mankind moves so slowly; it is because individuals have a capacity for better things that it moves at all.

We never really know what stupidity is until we have experimented on ourselves.