I believe in equality. Equality for everybody. No matter how stupid they
are or how superior I am to them.
Steve Martin
The doctrine of human equality reposes on this:
that there is no man really clever who has not found that he is stupid.
Gilbert K. Chesterson
Stupidity is the basic building block of the universe.
Frank Zappa (The Real Frank Zappa Book)
Only two things are infinite, the universe and human stupidity, and I'm
not sure about the former.
Albert Einstein