Heightening the oral-aural element in a culture does much more than merely de-emphasize vision. It subtly heightens the personalist element in a culture. For the plenary development of sound, the human voice, is a manifestation of the person. Even more than it is a manifestation of an understanding of objects, speech is a calling of one person to another, of an interior to an interior. Sight presents always surfaces, presents even depth as a lamination of surfaces, whereas sound presents always interiors, for sound is impossible without some resonance.

– Walter J. Ong. “Wired for Sound: Teaching, Communications, and Technological Culture.” College English 21, no. 5 (1960): 248.