Charles Ives

 
Charles Ives (Wikipedia)
 
    "It will probably be centuries, at least generations, before man will discover all or even most of the value in a quarter-tone extension. And when he does, nature has plenty of other things up her sleeve. And it may be longer than we think before the ear will freely translate what it hears and instinctively arouse and amplify the spiritual consciousness."    
    "Some Quarter-tone Impressions" in Essays Before a Sonata, The Majority, and Other Writings by Charles Ives, Selected and Edited by Howard Boatwright, The Norton Library, W. W. Norton & Company, Inc., New York, 1970, p109