JEAN JACQUES ROUSSEAU
Pantomime without discourse will leave you nearly tranquil; discourse without gestures will wring tears from you. The passions have their gestures, but they also have their accents; and these accents, which thrill us, these tones of voice that cannot fail to be heard, penetrate to the very depths of the heart, carrying there the emotions they wring from us, forcing us in spite of ourselves to feel what we hear. We conclude that while visible signs can render a more exact imitation, sounds more effectively arouse interest. This leads me to think that if the only needs we ever experienced were physical, we should most likely never have been able to speak.
Essay on the Origin of Languages which treats of Melody and Musical Imitation