I don't know.

Do you really need to ask the question to know the answer?

"What's going on in the cave? I'm curious." "I have no idea."

We must learn to live together as brothers, or we will perish together as fools.

Seeing that you're not surprised, I think you must have known.

What do you mean you don't know?!

Who doesn't know this problem?!

If you don't understand something, it's because you aren't aware of its context.

You don't know who I am.

I don't know him.

They don't even know why.

Is it any of your business what someone's hobby is?

I think there are probably few Japanese who know this side of the Emperor Meiji, the side that left a song like this.

The person who opened the door and came in was an utter stranger.

I'd rather not have those written by people who only know their work imperfectly.

I'm afraid of discord arising with my husband so I'm turning a blind eye to his mistress.

The point of true mutual understanding has not yet been reached between Japan and China.

But that's only natural because you don't know their ways yet.

Precognition is the act of using spiritual-power to know things that will occur in the future.

I've heard of pseudomyopia, but I never thought my own child would come to have it.