He has denied everything, sometimes directly, sometimes in Clintonian phrasing like "extraordinary accusations demand extraordinary proof."

Defenders of the current system argue that under generally conservative prefectural policies, extraordinary proof must be obtained before an arrest can be made.

In my view, extraordinary accusations demand extraordinary proof.

In four or five years, they have not come up with extraordinary proof.

Of course, extraordinary claims require extraordinary proof, Dr. Masse said, "and we're not there yet."

Such a link was regarded as extraordinary proof that the man stood high in the favor of the Father of the River.

Didn't say they won't believe us, but some old Earth scientist stated something like 'extraordinary claims require extraordinary proof.'

As CBS has found, to its chagrin, extraordinary charges require extraordinary proof.

He is credited with originating the oft-used phrase "Extraordinary claims require extraordinary proof."

They would say that 'extraordinary claims require extraordinary proof.'