The public at large, however, knew little and cared less about what was happening behind the scenes. Their eyeswhen they bothered to look at allwere upon the well lighted stage where the Harding Administration was playing a drama of discreet and seemly statesmanship.
Actions speak louder than words basically means that the character you play as yourself shows the real truth of who you are and what you're capable of, since playing the role of yourself can show your true colors without you even saying a word.
We are used to measuring the sounds we hear in loudness. The sound of your friend yelling is loud, while the sound of your own breathing is very soft. Loudness cannot be assigned a specific number, but intensity can. Intensity is measured in decibels. The human ear is more sensitive to high sounds, so they may seem louder than a low noise of the same intensity.