QUANTITY AND QUALITY.
The tones of the voice should vary also in quantity, or time required to utter a sound or a syllable, and in quality, or expression, according to the nature of the subject.
REMARK.—We notice a difference between the soft, insinuating tones of persuasion; the full, strong voice of command and decision; the harsh, irregular, and sometimes grating explosion of the sounds of passion; the plaintive notes of sorrow and pity; and the equable and unimpassioned flow of words in argumentative style.
The following direction, therefore, is worthy of attention:
The tones of the voice should always correspond both in quantity and quality with the nature of the subject.