The only thing worse than being stupid is pretending to be smart.
Stupidity is like an accent: always noticed in others, but rarely in yourself.
Repeating the same thing, over and over, and expecting a different result.
While G.W.Bush was US president, most Americans could say one thing for sure: they were smarter than their president! That’s not such a small matter, considering.
To be superstitious means not being sure about your abilities. Also, it means being stupid.
Work smarter, not harder. Yes, but what to do with stupid ones?