The Controlling Power of Music

For whether you wish to comfort the sad, to terrify the happy, to encourage the despairing, to humble the proud, to calm the passionate, or to appease those full of hate—and who could number all these masters of the human heart, namely, the emotions, inclinations, and affections that impel men to evil or good?—what more effective means than music could you find?

Martin Luther.  Cited by John Makujina in Measuring the Music, pg. 228