How to use "precious" in a sentence

We face the arduous days that lie before us in the warm courage of national unity; with the clear consciousness of seeking old and precious moral values; with the clean satisfaction that comes from the stern performance of duty by old and young alike

Sala wished she could see him on her own, but she knew that time with his family was precious

Five precious minutes left.

Vivienne wasn't going to jeopardize her precious independence.

You could have had that precious time with him

'I'll read it tonight,' I said, taking the precious envelope