"Beware of how you talk, young man," said Umbezi in a grave voice.
"My friends," began the senator, in a grave voice, "this is a most impressive and important occasion."
"I love the abandonment of their sleep," she said to her visitors in a grave voice, smiling down.
Another time Reith thought to hear grave voices speaking, at not too far a distance.
"Too late," a deep, grave voice said above them both.
"Our task is far from done," said the grave voice of Adaon.
He waited a minute and then repeated in a grave voice.
"This has been going on for years," a grave voice warns.
"I'd rather not be the bearer of ill news," the alien said in his quiet, grave voice.
It was the grave voice of the family lawyer.