It may be some story related to the old theory of an eternal man in the sky who created the world.

Parts of the old theory, however, we carry over to the new one.

He was delighted to find that an old theory of his turned out to be true.

This data suggested his old theory was wrong, at least in part.

They worked on the old Scottish theory that, if a man wants company, he'll ask for it.

Are we back to the old theory of the self-correcting history?

But it was enough to confirm an old and favorite theory.

Which is hanging a lot on the poor old theory of natural selection.

"What happened to the old theory that I fell in love with as a youth?"

"It goes to prove my old theory that we probably had a few more decades left," he said.