The department once asserted that its bomb production plants were not subject to Federal or state environmental laws.

It may not be true that trees cause pollution, as former President Reagan once asserted.

He asserted once and for all the importance of male dance, furthering in particular the notion of "heroic" male dance.

In all these many days and weeks of travel, he had never once asserted himself, except on that single morning with her, when no one else could see.

Pressed to defend his art, he once asserted, "There are pictures that are even worse than mine."

Mr. Bush once asserted that "Reaganomics" was "voodoo economics."

Iraqi officials once asserted that they had developed a ballistic missile to intercept enemy missiles.

In a much quoted statement, Brezhnev once asserted that civilian production accounted for 42 per cent of the output of defence industry itself.

A fuguing tune certainly is not some kind of failed attempt to write a fugue, as an ill-informed musicologist once asserted.

The critic Helen Vendler once asserted that he "is not a great poet, but he is a fascinating, original and disturbing one."