Stupidity often saves a man from going mad.

The Cardinal is at his wit's end -- it is true that he had not far to go.

The key to the age may be this, or that, or the other, as the young orators describe; the key to all ages is -- Imbecility; imbecility in the vast majority of men, at all times, and, even in heroes, in all but certain eminent moments; victims of gravity, custom, and fear.

To be clever enough to get all the money, one must be stupid enough to want it.

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

He's a fool that makes his doctor his heir.

Stupidity gets up early; that is why events are accustomed to happening in the morning.

An empty head is not really empty; it is stuffed with rubbish. Hence the difficulty of forcing anything into an empty head.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Stupidity is without anxiety.