If a person is stupid, we excuse him by saying that he cannot help it; but if we attempted to excuse in precisely the same way the person who is bad, we should be laughed at.

When all else fails, admit you’re an idiot.

If you do something and people think you’re stupid, just go for crazy. You get more respect that way because nobody likes stupid people.

You underestimate the ability of people to act like idiots.

Greater caution is called for when dealing with a stupid person than with a malicious one.

A stupid person can make only certain, limited types of errors; the mistakes open to a clever fellow are far broader. But to the one who knows how smart he is compared to everyone else, the possibilities for true idiocy are boundless.

Never call someone an imbecile (or fucking idiot) unless he causes harm to others/system; there must be a moral dimension to insults.

If I decide to be an idiot, then I’ll be an idiot on my own accord.

There are two ways to be stupid: plain lack of brainpower, and ideology. The two are far from mutually exclusive though. If you're not intelligent enough, you're more likely to allow in an ideology that drags you even further down.

Empathize with stupidity and you’re halfway to thinking like an idiot.

It's one thing to think someone's stupid. And fair enough if you need them to be. But you can't go banking on it. That's a mug's game.

A fool will think you are an idiot if you talk sense to him.

Never argue with an idiot. They will only bring you down to their level and beat you with experience.

Don’t argue with idiots on the Internet.

How do you know you’re arguing with an idiot?

Because they’re arguing with idiots on the Internet.