Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert EinsteinBetter to remain silent and be thought a fool than to speak out and remove all doubt.
Abraham LincolnStupidity is something unshakable, nothing attacks it without breaking itself against it, it is of the nature of granite, hard and resistant.
Gustave FlaubertDiscipline divorced from wisdom is not true discipline, but merely the meaningless following of custom, which is only a disguise for stupidity.
Rabindranath TagoreTo be idle is a short road to death, and to be diligent is a way of life; foolish people are idle, wise people are diligent.
BuddhaThe skillful employer of men will employ the wise man, the brave man, the covetous man, and the stupid man.
Sun TzuSociety is not a disease, it is a disaster. What a stupid miracle that one can live in it.
Emile M. CioranI don't want to feel like I've matured. That's a stupid word that I never want to use.
Marilyn MansonThe trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.
Bertrand RussellCan anything be stupider than that a man has the right to kill me because he lives on the other side of a river and his ruler has a quarrel with mine, though I have not quarrelled with him?
Blaise Pascal