Attributed to Ben Franklin-
"Don't Argue with Stupid People..... They will drag you down to their level and then beat you with experience!"
"When you are dead, you don't know that you are dead. It is difficult only for the others. It is the same when you are stupid."
"Arguing with Idiots is like playing chess with a pigeon..... No matter how good you are, the bird is going to sh$t on the board and strut around like it won anyway."