We'll start with two things we do know for a fact.

I know for a fact two of the kids aren't his!

I could tell he did not know that for a fact.

He knows for a fact that I want him to leave.

If there is one thing I know for a fact.

And I know for a fact that will mean something to those guys.

You could go both ways; they knew that for a fact.

"Do you know for a fact he was with her that night?"

What do I actually know for a fact, here, really?

For a fact, I never saw her the whole time we were there.

I know for a fact that you are not, and never have been, one of us.

I know for a fact you are working to control the size of the field.

Which he knows for a fact she does not spend on the child.

I know this for a fact because I've seen him on tv.

These are things that most of us know for a fact and don't question.

Perhaps that is so, but do we know it for a fact?

Because we know for a fact certain that arms have gone in there.

We know for a fact that things are made with too many parts.

I know this for a fact because my father stopped at every one of them.

So we know for a fact that he died between eight and ten.

He knew for a fact that he'd been named in one will.

He knew this for a fact because she had come to the hospital.

"I know for a fact you can do a better job than that."

They know for a fact that the new drugs will make everything all right.

They can't run with us, I know that for a fact.