Translation of "Stupidity" in Chinese

There's no cure for stupidity.

这个笨蛋没救儿了。

Human stupidity knows no limits.

人类的愚蠢行为艺无止境。

Stupidity is a lack of intelligence.

愚蠢是智慧的缺乏。

You should be ashamed of your stupidity.

你應該為你的愚蠢感到羞恥。

Nothing is more sad than stupidity and apathy.

哀莫大于心死

Stupidity is riding a bike that doesn't have brakes.

愚蠢骑着没有闸的单车。

- You should be ashamed of your folly.
- You should be ashamed of your stupidity.

你應該為你的愚蠢感到羞恥。

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

世界上只有两个东西是无限的，一为宇宙，一为人类的愚蠢，我所不能肯定的乃是前者。

Intelligence is doing what you are supposed to, while stupidity is doing what you are not supposed to.

做該做的事是智慧，做不該做的事是愚癡。