I've had the thing in my own hands often enough to know!

"Information like that is a good thing for me to know."

The next thing to know is that they usually get them.

That is not a good thing to know about yourself.

It's a very hard thing to know just what people do expect.

It was one thing to know I had been in a place like that.

It was a difficult thing to know how to kill him.

There were things to know that words could never tell.

The important thing to know is that we expect to go tonight.

Maybe that wasn't such a bad thing to know, either.