Because it was, on his part, an expression of true emotion.

Hopefully he'd managed to keep his expression free of emotion.

The low wail rose and fell as with the expression of wholly human emotion.

He could only do it, make his being there stand in for any expression of emotion.

Art can also be a form of expression of emotion.

He had a different reaction from the others-he was surprised to find an expression of emotion.

Another expression of emotion, and this time it didn't seem to come from a book.

I was seeing an expression of emotion now even when there were no lines whatsoever in his face.

This was a natural expression of emotion and solidarity.

Which for Jones was an expression of overwhelming emotion.