Alexander explained that he had a young son at home, Hugh, who could in fact equal the Earl in power and would someday prove it.

He had some strength in him that might prove useful someday.

"I would not have gone on," he muttered, "save that I was told the friendship might someday prove valuable."

"Moreover, to have friends on Earth may someday prove useful."

The god decided it was good he had not fed this one to the crocodiles--he might prove useful someday.

That we should have faith that heresy would someday prove correct.

I later erase what's inconsequential, and keep anything that might someday prove useful.

They might prove useful as evidence someday, and they could take the place of Madeline's wedding-clock.

Even if the equations someday prove useful, it would say nothing about the existence of other dimensions.

You never know what kind of information might prove valuable someday.