I have it on unimpeachable authority that his abiding interest is the human voice - whether the one we hear when we speak, or the one that informs and sustains us whatever we read.

It's true,' the fat man protested mildly, 'I have it on unimpeachable authority.

But I have it on unimpeachable authority that your emotions so reacted on your better judgment that you threatened to take Miss Odell's life and also your own.

When you gotta have an omelette, you gotta whisk eggs, to quote that unimpeachable authority, Duke Wayne.

"Eugenics would combine an American self-consciousness with the new and unimpeachable authority of Science."

The scandal, which has already tarnished the Catholic Church's image as an unimpeachable moral authority during the Communist years, has caused chaos in a church already divided between liberal and conservative camps.

His Vie de Descartes is a mine of information on the philosopher and his work, derived from numerous unimpeachable authorities.

The other instance: we are told on unimpeachable authority that a woman is looking forward to the birth of her daughter; years later we read of a young man arriving on the scene.

"I have it on unimpeachable authority that there will be an attempt made to strangle the Princess this very night."

Her part in saving the planet- and her bereavement-gave her an unimpeachable authority.