Hello again, there is a phrase in my native language used to refer to “you can’t consider many things are too simple, especially when they come to social affairs, because people’s minds and behaviors are in different layers so often we suppose do not know all”. The idiomatic expression in my language is like “the world is not two colors, white or black”.

I was wondering if there were some similar saying in English can phrase that used commonly.

Question

Hello again, there is a phrase in my native language used to refer to “you can’t consider many things are too simple, especially when they come to social affairs, because people’s minds and behaviors are in different layers so often we suppose do not know all”. The idiomatic expression in my language is like “the world is not two colors, white or black”.

I was wondering if there were some similar saying in English can phrase that used commonly.

Answer

I think the way it's most commonly said in American English is "things aren't always black or white."

Answer

I can't think of any popular famous quotes along those lines. But it's quite common to say things like:

Not everything is so black & white.

Rainbow colours are also used to represent this, especially in sociopolitical organisations.

In times like this, where there is a lack of wise idioms in English, I would probably refer to Laozi. For example the start of chapter 41 is a perfect quote for this instance, to share with my English speaking friends, not just to highlight how everyone is different, but also to affirm how it's a necessary thing.

上士聞道, 勤而行之.
中士聞道, 若存若亡.
下士聞道, 大笑之. 
不笑不足以為道.

Answer

What's the Chinese expression?

The world isn't black or white.

Answer

A good quote is Spinoza's "No matter how thin you slice it, there will always be two sides."

A good related saying is, "Nothing is ever as simple as it seems." (That's one of Murphy's three laws, by the way.)

Answer

It's common to say something like "it's not all black or white." It's not a completely stereotyped phrase, but it's common.