Archie wedged himself against the wall with the quiet concentration of a clam nestling in its shell, and hoped for the best.

He says that he enjoys the quiet concentration of the work.

Still, there was something in their gentle grooming and in the quiet concentration of the children that made him feel sad and a little lonely.

Mr. Hunt's quiet concentration on these unfathomable tasks made them seem very worthwhile.

There was an air of quiet concentration.

It is also overly cluttered and eventful, even though the earlier film generated its suspense with quiet concentration.

But in the biology laboratory the scene was one of quiet, intense concentration.

Boys that age ought to be shouting, that was part of the game; but games here were played with quiet concentration.

In the next hour, Dr. Shaw manages to channel raw, youthful energy into quiet concentration.

If the person can maintain quiet concentration the energy will be sensed as flowing upwards.