Physicists, in this their hour of need, have been re-examining the cosmological constant, finding no known principle that forbids it.

He knew the feeling of frustration well enough, army brass had worked according to no known principles of logic.

As well as encouraging her to apply general known principles, the ward staff also need to provide tuition and support.

Advantage: No violation of known general principles of physics is needed.

He commented that this was a known general principle, discovered by Onsager, but was "not quoted in any of the books on the subject".

The device is not based on any known scientific principle.

I have a poor magical imagination, and find it difficult to apply known general principles to produce a desired effect.

Physicists can think of no known principle to forbid it.

Managers, I felt, were also bound by every known principle of fiduciary duty to put the interests of the shareholders before their own.

More importantly, the exploitation of the seas should be based on the known precautionary principles of environmental protection.