Source: 1960s, Beyond Economics: Essays on Society, 1968, p. 141 as cited in John Laurent (2003) Evolutionary Economics and Human Nature. p. 175
“It is not easy to determine the nature of music, or why any one should have a knowledge of it.”
Book VIII, 5, 1339a
Politics
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Aristotle 230
Classical Greek philosopher, student of Plato and founder o… -384–-321 BCRelated quotes

History of England http://books.google.com/books?id=6hUTAQAAIAAJ&q="Socrates+gave+no+diplomas+or+degrees+and+would+have+subjected+any+disciple+who+demanded+one+to+a+disconcerting+catechism+on+the+nature+of+true+knowledge" (1960).

Variant: There's nothing remarkable about it. All one has to do is hit the right keys at the right time and the instrument plays itself.

As quoted in "The Mathematician" in The World of Mathematics (1956), by James Roy Newman
From Milton Babbitt, "The Structure and Function of Musical Theory", College Music Symposium, Vol. 5 (Fall 1965), pp. 49-60; reprinted in Perspectives on Contemporary Music Theory, ed. Benjamin Boretz and Edward T. Cone (New York: Norton, 1972), pp. 10-21, ISBN 0393005488, and in Milton Babbitt, The Collected Essays of Milton Babbitt, ed. Stephen Peles, with Stephen Dembski, Andrew Mead, and Joseph N. Straus (Princeton: Princeton University Press, 2003), pp. 191-201, ISBN 0691089663.

Letter to Isaac Glikman, August 28, 1955; Josiah Fisk & Jeff Nichols (eds.) Composers on Music (1997) p. 364.

“The right method in any particular case must be largely determined by the nature of the problem.”
Source: Lectures on The Industrial Revolution in England (1884), p. 29

III, p.34
Science and the Unseen World (1929)