Which non-verbal strategy can use to emphasize key points? Gestures volume pace tone

"Then in a wailful choir, the small gnats mourn

Among the river sallows, borne aloft

Or sinking as the light wind lives or dies;

And full-grown lambs loud bleat from hilly bourn;

Hedge-crickets sing; and now with treble soft

The redbreast whistles from a garden-croft,

And gathering swallows twitter in the skies."