"The only way to comprehend what mathematicians mean by Infinity is to contemplate the extent of human stupidity." -- Voltaire

"Only two things are infinite, the universe and human stupidity, and I'm not sure about the universe." -- Albert Einstein

"The two most common things in the universe are hydrogen and stupidity." -- Harlan Ellison

"There is more stupidity than hydrogen in the universe, and it has a longer shelf life." -- Frank Zappa

"There are more fools in the world than there are people." -- Heinrich Heine

"Never underestimate the power of human stupidity." -- Robert Heinlein