英和和英

You'll never know unless you try.

There is no way that you know.

No one knows more about it than yourself.

profess ignorance

I wouldn't know.

to jump to conclusions

To put it succinctly, I don't know, and I don't want to know.

These things are often unknown to the world.

I know everything about you.

awareness that one is ignorant

I haven't got the slightest idea about that.

I'm quite in the dark about it.

awareness of one's ignorance

Pretend you don't know anything.

I know no more about it than the man in the moon.

The more you know, the less you understand.

The more you know the less you know.

affect genteel ignorance

That amounts to a confession of your own ignorance.

To know oneself is difficult.

There is no person who knows about this as much as you.

They are all strangers to me.

not knowing or perceiving

There is no one but knows it.

I bet that you know it.

A fat lot you know about it!

That's common knowledge.

Nobody knows.

Nobody knows it.

No one knows.