“They are an inexhaustible spring of delight. Their diversity corresponds to our most varied moods, from the state of quiet content in which all we ask of art is entertainment, exquisite rather than deep, the exuberance of animal spirits, the consciousness of physical and moral health, to melancholy, sorrow and even revolt, and to an Olympian serenity breathing the air of the mountain tops. The comparative uniformity which we notice between them at first sight disappears with closer scrutiny. The feeling is never the same from one to the other; each one is characterised by a personality of its own and the variety of their inspiration shows itself ever greater as we travel more deeply into them.”
Cuthbert Girdlestone
Mozart and his Piano Concertos, 1939
https://standpointmag.co.uk/issues/may-june-2020/mozarts-infinite-riches/