The institutions of Roman civil law were bound up with the rigid observance of strict form; trusts were not, the textbooks say.

They see beauty in rigid observance of Jewish law, or halacha, even or especially when obedience is taxing.

In his regiment Maximilian Morrel was noted for his rigid observance, not only of the obligations imposed on a soldier, but also of the duties of a man; and he thus gained the name of "the stoic."

In a nation built upon ancient traditions and held together by the rigid observance of age-old customs and protocols, changes are seen as a threat to the fabric of society - to be resisted at all cost.

In contrast to the isolated way of life of those practicing strict Orthodoxy, the national religious movements blend rigid observance of Jewish religious law with full integration into contemporary Israeli life.

A hunter, of the name of Young, told me a curious story of their rigid observance of this strange rite.

He didn't need pages of written-out spellcasting-a grimoire, a temple full of tools and furniture, and rigid observance of planetary hours-to be able to use it.

As to Charles, he was so accustomed to feminine eccentricity, in the person of his aunt, that the only thing which could surprise him would be a rigid observance of etiquette.

After all, the Nadir are well known for their rigid observance of civilised behaviour.

From the beautiful connexion, say they, and rigid observance of established rules, we draw the chief argument for theism; and from the same principles are enabled to answer the principal objections against it.