In a once-famous article, ‘The Elimination of Metaphysics through the Logical Analysis of Language’, first published in 1932, Rudolf Carnap (1959) wrote:

The harmonious feeling or attitude, which the metaphysician tries to express in a monistic system, is more clearly expressed in the music of Mozart. And when a metaphysician gives verbal expression to his dualistic-heroic attitude towards life in a dualistic system, is it not perhaps because he lacks the ability of a Beethoven to express this attitude in an adequate medium? Metaphysicians are musicians without musical ability.