汉英词典
Chinese-English Dictionary
MEANING OF 若要人不知,除非己莫為
If you don't want anyone to know, don't do it (idiom). fig. If you do something bad, people will inevitably hear about it.
If you want others, don't know, unless you don't do it / The bad thing is to expose
要想人家不知道,除非自己不去做。指干了坏事终究要暴露。
ruò yào/yāo rén bù/bú zhī chú fēi
EXAMPLE SENTENCES

若要人不知,除非己莫为

If you don't want people to know, you'd better not do it.

古人云:若要人不知,除非己莫为

The ancients cloud: if to conceal.

看来“若要人不知道,除非己莫为”这句话还真有道理。

If you don't want others to know about it, don't do it.

夜晚做的事,白天人皆知。 若要人不知, 除非己莫为。

What is done by night appears by day.

哼,若要人不知,除非己莫为。不知道老板看了这些照片,会怎么想。

Well, the day has eyes, the night has ears. I wonder what our boss will think if he sees these.