Charles Émile Blanchard, Popular Science Monthly (1876)
“ If the mouth be opened very widely, and the breath emitted with force, the voice becomes imperious: such is the tone in which a military officer gives the word of command. Words that are in themselves simple enough, when uttered in a hard, brusque tone, become offensive. When the sounds are uttered softly, with some degree of tremulousness, the words succeeding one another with deliberate slowness and imperceptible lowering of pitch, the sympathy of the hearer is awakened. Some women, it is asserted, possess a wonderful power of thus rendering their entreaties irresistible. ”
