The most direct is that for which music expresses the emotions of the will itself, and the most indirect that of conceptions denoted by words. When the language of the feelings is in question the reason does not willingly sit entirely idle.
 Arthur Schopenhauer, The World as Will and Representation (1819). copy citation

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Author Arthur Schopenhauer
Source The World as Will and Representation
Topic music language
Date 1819
Language English
Reference
Note Translated by R. B. Haldane and J. Kemp
Weblink http://www.gutenberg.org/files/40868/40868-h/40868-h.html

Context

“Moreover, that the addition of poetry to music is so welcome to us, and a song with intelligible words gives us such deep satisfaction, depends upon the fact that in this way our most direct and most indirect ways of knowing are called into play at once and [pg 234] in connection. The most direct is that for which music expresses the emotions of the will itself, and the most indirect that of conceptions denoted by words. When the language of the feelings is in question the reason does not willingly sit entirely idle. Music is certainly able with the means at its own disposal to express every movement of the will, every feeling; but by the addition of words we receive besides this the objects of these feelings, the motives which occasion them.” source