Oliver Sacks

What an odd thing it is to see an entire species -- billions of people -- playing with, listening to meaningless tonal patterns, occupied and preoccupied for much of their time by what they call 'music.' (-- The Overlords, from Arthur C. Clarke's Childhood's End)

Music, uniquely among the arts, is both completely abstract and profoundly emotional. It has no power to represent anything particular or external, but it has a unique power to express inner states or feelings. Music can pierce the heart directly; it needs no mediation.

Thus the feeling I sometimes have - which all of us who work closely with aphasiacs have - that one cannot lie to an aphasiac. He cannot grasp your words, and cannot be deceived by them; but what he grasps he grasps with infallible precision, namely the expression that goes with the words, the total, spontaneous, involuntary expressiveness which can never be simulated or faked, as words alone can, too easily.