You looked a little bit smarter when your stupidity lessened a lot.

Smartass Disciple: But, you said that it's the truth??
Master of Stupidity: O Yes. That is yesterday's truth.

Why you keep telling me to be careful, Old man ?
Your stupidity doesn't deserve my sacrifice, Kiddo.

Intelligence minus purpose equals stupidity.

Dealing with one who feels smarter than you,
let him assume that you ain't smarter than him.

A fool tries to shut others' mouth
instead of listens to his own heart.