He stood aloof from parties and had no rigid principles, but held views closely resembling those of Narbonne.

Yet it had to be based on rigid scientific principles that would be the same in any universe.

He was a man of rigid principles.

Cornelius Beresteyn was a man of rigid principles and unyielding integrity.

Jewish society was persistently kept under the discipline of rigid principles.

Blaine's sense of honour, his rigid principles, would have left no room for manoeuvre.

His final transformation into a mature man - one of heart and soul as well as rigid principles - is also nicely handled.

The single currency is in itself a unifying and rigid principle, something our Liberal friends seem to have realised a little too late.

The cardinals will be operating in a cocoon of secrecy and rigid principles laid down by John Paul.

Yet Japan managed to turn a negotiating strategy of islands first, economic cooperation second, into a matter of rigid principle.