He looked directly into Buck's eyes and spoke with quiet authority.

She has built a luminous career with quiet but firm authority.

There was a quiet authority in his voice that Jake hadn't heard before.

"This is the way things are going to be," Richard finally said in a voice of quiet authority.

He ground his teeth for a second, then spoke with quiet authority.

She has risked enough already,' he said with quiet authority.

He had the quiet authority of one backed by much wealth.

"I don't think you have any choice about remaining," he said with quiet authority.

'I already know who you are,' he said with quiet authority.

She has a quiet authority that can get her point across with a whisper.