If you think you're smart,
think twice to be smarter.

Selfrighteous creates wars more often than other reasons.

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

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

If you like it, you'll find a way to justify it.
But if you don't , you'll find ways to falsify it.

If you ain't smart, diligence can solve it.