"I could always make $50 million," he explained to me once.

It's already being explained to you once, but here goes just for your benefit.

"After a while, you just look at the world that way," he once explained.

"I work better with men," she had explained to Peter once.

"It would have been death to be known as a writer," she once explained.

"I just never got around to it," he once explained.

"I don't want to seem to take all the credit," he once explained.

Someone had once explained to her: Except when it is somewhere else.

So do trees, but Geoffrey once explained that to me.

And once explained, they still don't add up to credible science fiction.